Across Australian suburbs, a quiet chemical ritual has grown into a public health emergency: nitrous oxide, once a minor party curiosity, is now being consumed from industrial tanks the size of fire extinguishers and discarded in parks, outside schools, and along residential streets. Community complaints have more than doubled in a year, poison centre calls are climbing steeply, and the neurological toll on users—paralysis, psychosis, permanent nerve damage—speaks to a substance whose dangers scale with its availability. Regulators are beginning to respond, but the gap between the law and the
Nitrous oxide crisis spirals: dumped nangs double as large tanks flood Australian suburbs
Poison center calls doubled in Victoria; 51 children and teenagers required hospital care in NSW; users develop irreversible neurological harm, psychosis, paralysis, and memory loss.
They're describing tanks the size of a fire extinguisher
Mark
So this is about litter, or is it about addiction?
Mimi
It's both. The dumped canisters are a visible symptom of a much larger problem—people are using these tanks regularly, in groups, at night, and then abandoning them. The litter is what residents see first, but it points to heavy use.
Luke
How much of the increase in complaints is actually more use, versus more people reporting it? Snap Send Solve is a specific platform. Are councils tracking this separately?
Mimi
That's a fair question. Gorog himself said the figures are conservative—they only counted reports where people explicitly typed "nangs" or "nitrous oxide." So yes, awareness and reporting may be part of the rise. But Transnitro, an independent hazardous waste company, is also seeing a definite increase in collections, which suggests the problem is real, not just better reported.
Mark
Why are the large tanks so much more dangerous than the small bulbs?
Mimi
The eight-gram bulbs have a built-in limit—you use one, it's done. But the large tanks have an on-and-off nozzle. Someone can inhale continuously, and if they pass out, the nozzle stays open. Constant flow of gas into an unconscious person. That's when you get hypoxia, seizures, permanent nerve damage.
Luke
But we don't have data on how many people are actually using these tanks versus how many are just being dumped. The complaints are about litter. We don't know if the same group is using them every night or if different groups are.
Mimi
True. The poison center data gives us a proxy—calls doubled in Victoria. But you're right that we're inferring usage patterns from disposal patterns. They're not the same thing.
Mark
What's the regulatory gap, exactly?
Mimi
These tanks are manufactured overseas and imported with no restrictions. Retailers—smoke shops, online marketplaces, apps—can buy them in bulk and sell them without age verification, without limits on quantity, without any oversight. It's completely legal right now.
Luke
And the TGA is consulting on changes, but those don't take effect until after October 12 at the earliest. NSW has rules starting November 5, but that's just one state. How long until anything actually changes nationally?
Mimi
That's the tension. Bramman wants the tanks stopped at customs, which would require TGA rescheduling and coordination with border enforcement. That's a bigger lift than state-level retail restrictions. It could take months or longer.
Mark
What happens to someone like Bramman—the long-term damage, can it be reversed?
Mimi
No. The neurological harm is described as irreversible. He spent eighteen months bed-bound after psychiatric hospitalization. Memory loss, psychosis, nerve damage, paralysis—these are permanent outcomes for heavy users.
Le Pouls
- Industrial nitrous oxide tanks, some decorated like novelty items and sold through apps with same-day delivery, have flooded suburbs with no age checks, no purchase limits, and no accountability.
- Abandoned canisters—up to 200 collected weekly in Melbourne's CBD alone—are appearing outside schools and homes, leaving residents unsure whether the steel cylinders are empty, dangerous, or their problem to dispose of.
- Poison centre calls in Victoria more than doubled in a single year, and 51 children and teenagers required hospital care in NSW, as continuous-flow tanks allow users to inhale until they lose consciousness.
- One survivor spent eighteen months bed-bound after drug-induced psychosis, then ran from Sydney to Parliament House to force the issue into public view—and it worked.
- NSW has announced retail restrictions effective November 5, and the TGA is consulting on national rescheduling that could block large tanks at the border entirely, though the window for submissions closes October 12.
Across Australian suburbs, a quiet chemical ritual has grown into a public health emergency: nitrous oxide, once a minor party curiosity, is now being consumed from industrial tanks the size of fire extinguishers and discarded in parks, outside schools, and along residential streets. Community complaints have more than doubled in a year, poison centre calls are climbing steeply, and the neurological toll on users—paralysis, psychosis, permanent nerve damage—speaks to a substance whose dangers scale with its availability. Regulators are beginning to respond, but the gap between the law and the marketplace has already cost many their health, and some their futures.
Just after midnight on a Melbourne street, men gather behind parked cars to inhale from industrial nitrous oxide tanks—some the size of fire extinguishers, decorated with palm trees and galaxies. When they're done, the heavy steel cylinders are left on the roadside. According to one resident, it happens every night, for months.
What was once a minor party risk has become a suburban emergency. Community platform Snap Send Solve received more than 1,200 complaints about abandoned canisters in the past year—more than double the previous period, and six times the figure from 2024. Victoria is the epicentre, with 986 reports and a 143 percent year-on-year increase. Chief executive Danny Gorog notes that residents are no longer describing small silver bulbs but tanks dumped outside schools and homes, and that many complaints don't even use the word 'nangs,' meaning the true scale is likely larger than the data shows.
Melbourne hazardous waste firm Transnitro collects between 100 and 200 canisters per week from the CBD and nearby suburbs alone—up to 25 tonnes last quarter. About 40 percent arrive partially used or full, and cleanup costs are often borne by residents or left unaddressed. Both collectors and community advocates are calling on councils to establish drop-off points and take formal responsibility.
The supply chain enabling this crisis operates in a regulatory vacuum. Large tanks are sold through smoke shops, online marketplaces, and delivery apps—with no age verification, no bulk purchase limits, and no oversight. Some are manufactured in unregulated overseas factories where machine oils can contaminate the gas, a risk confirmed by studies finding those oils in users' lungs. Sam Bramman, founder of advocacy group No 2 Nangs, spent two and a half years recovering from nang addiction and recalled buying from five smoke shops in his suburb without a single question asked.
The health toll is accelerating. Victoria's Poisons Information Centre recorded 121 nang-related inquiries in 2025, up from 32 in 2021. In NSW, 280 exposure cases were logged between 2020 and 2025, with 241 requiring hospital care—including 51 children and teenagers. Medical authorities warn that misuse causes irreversible neurological damage: memory loss, depression, psychosis, paralysis, and permanent nerve injury. The large continuous-flow tanks are especially dangerous; a user who passes out may continue inhaling with the nozzle still open.
Bramman knows this firsthand. Hospitalised with drug-induced psychosis in late 2023, he spent the following eighteen months largely bed-bound. His recovery became advocacy: earlier this year he ran from Sydney to Parliament House to demand reform. NSW responded with restrictions taking effect November 5—banning cylinders over 10 grams at retail, prohibiting sales to under-18s, and ending same-day delivery. The TGA is now consulting on national rescheduling proposals that could, if adopted, allow customs to block large tanks at the border altogether. Submissions close October 12.
Just after midnight on a Melbourne street, a group of men gather behind parked cars in the darkness. They've moved beyond the small eight-gram silver bulbs—the kind that once defined casual nang use at parties. Now they're pulling out industrial tanks, some decorated with Miami palm trees and galaxies, each one the size of a fire extinguisher. They inhale the nitrous oxide, chase the high, and when they're finished, they dump the heavy steel cylinders onto the roadside. According to one resident, this scene repeats itself every night, like clockwork, for months on end.
What was once a brief recreational risk has become a suburban crisis. Community reporting platform Snap Send Solve received more than 1,200 complaints about abandoned nitrous oxide canisters in the past twelve months—more than double the 500 reports from the same period a year earlier. In 2024, there were only 200 such complaints. The trend is accelerating far faster than general litter reporting; abandoned nangs now account for more than four times the share of rubbish reports compared to 2024. Victoria has become the epicenter, with 986 complaints filed so far this year alone, representing a 143 percent increase from 2025. New South Wales and Western Australia are seeing similar year-on-year growth, though their total complaint numbers remain lower at 128 and 66 respectively.
Snap Send Solve chief Danny Gorog described a dramatic shift in what residents are reporting. "Two years ago a report about nangs was a rarity," he said. "This year residents are logging around five a day, and they're not describing the little bulbs any more. They're describing tanks the size of a small fire extinguisher, dumped in parks, outside schools and on the nature strip in front of people's homes." The messages coming through reflect anxiety as much as annoyance—people don't know if the canisters are empty, whether they could explode, or who is responsible for removal. Repeatedly, residents express fear that children will find them first. Gorog believes the actual scale is larger than reported figures suggest, since many complaints simply say "gas canisters" or rely on photos without using the words "nangs" or "nitrous oxide."
On the ground, hazardous waste collectors are seeing the volume firsthand. Melbourne-based Transnitro collects between 100 and 200 nitrous oxide canisters per week just from the CBD and surrounding suburbs within a five to ten kilometer radius. Founder Ryan Keary reported the company collected up to 25 tonnes of canisters last quarter—a definite increase. The cylinders come in three sizes: 1 liter, 3.5 liters, and 4.5 liters, and they've been growing larger over the years. About 60 percent of what Transnitro collects are empty; the rest are partially used or sometimes full. After collection, the canisters are decommissioned and the steel and brass are separated for recycling. But the cleanup carries a cost that well-meaning residents often bear themselves. Both Keary and Gorog are calling on local councils to establish drop-off points and take responsibility, rather than leaving residents to pay disposal fees or leaving canisters to accumulate in public spaces.
The accessibility of large nitrous oxide tanks has created a regulatory vacuum. These industrial canisters, manufactured overseas, are sold through smoke shops, online marketplaces, and mobile apps—some offering same-day delivery and loyalty programs with discounts. There is no age verification, no restrictions on bulk purchases, and no oversight. Sam Bramman, founder of No 2 Nangs, a not-for-profit campaign advocating for retail laws across Australia, spent two and a half years recovering from nang addiction. He recalled purchasing nitrous oxide from five smoke shops in his NSW suburb without being questioned. In Newtown, Sydney, he said, every ninth smoke shop displays these large tanks in the front window. Some tanks are produced in unregulated foreign factories where industrial machine oils from manufacturing can leak directly into the gas cylinders—a concern underscored by studies finding machine oils in users' lungs.
The health toll is mounting. Victoria's Poisons Information Centre saw calls regarding nang exposure more than double from 2024 to 2025, reaching 121 inquiries last year compared to just 32 in 2021. The trajectory has climbed steadily: 60 cases in 2024, then doubling to 121 in 2025. In NSW, the Poison Information Centre responded to 280 total exposure cases involving nitrous oxide between 2020 and 2025, with 241 requiring hospital care. While most cases involved adults aged 20 to 74, there were 51 cases of children and teenagers requiring medical attention. Queensland recorded 11 hospital admissions for poisoning by inhaled anaesthetics in 2025, 25 in 2024, and 13 in 2023. Medical authorities warn that while nitrous oxide is safely used as an anaesthetic in clinical settings, misuse through excessive or regular exposure causes serious, irreversible neurological harm. Long-term effects include memory loss, depression, psychosis, hypoxia from oxygen deprivation, permanent nerve damage, and paralysis.
Bramman's own experience illustrates the severity. He was admitted to a psychiatric ward in late 2023 after developing drug-induced psychosis from nitrous oxide abuse. Upon discharge, he spent the next year and a half bed-bound, suffering from severe lack of motivation and inability to perform basic self-care. The large tanks with continuous nozzles pose particular danger—unlike the eight-gram bulbs with inherent limits, these tanks allow users to inhale continuously. Someone using a large tank can pass out with the nozzle still open, creating a constant flow of nitrous oxide into their body.
Regulatory reform is beginning to move. Bramman's personal advocacy, including a run from Sydney to Parliament House earlier this year to raise awareness, prompted NSW to announce major reforms taking effect November 5: prohibiting retail sale of cylinders larger than 10 grams, banning sales to people under 18, prohibiting same-day delivery, and restricting retail sale hours. The Therapeutic Goods Administration is currently consulting on two proposals to further restrict non-therapeutic nitrous oxide under the Poisons Standard, with submissions open until October 12. The first would prohibit supply and use of nitrous oxide for non-therapeutic purposes in amounts greater than 10 grams; the second would classify it as a controlled drug with exemptions for legitimate industrial, automotive, and hospitality purposes. Bramman's goal is to prevent large tanks from being imported into Australia altogether, stopped at the border through customs—a possibility if the TGA works with customs and reschedules nitrous oxide, affecting every state and territory.
Citations marquantes
Two years ago a report about nangs was a rarity. This year residents are logging around five a day, and they're not describing the little bulbs any more.— Danny Gorog, Snap Send Solve chief
Nitrous oxide abuse is dangerous. There's not just the short term effects like passing out or freeze burns or seizures. There is long-term stuff like permanent nerve damage, long-lasting mental health issues, psychosis and paralysis.— Sam Bramman, founder of No 2 Nangs
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