In Melbourne, Australia, emergency doctors have identified a troubling trend: an increasing number of patients using nitrous oxide, commonly known as laughing gas, are exhibiting psychosis-like symptoms. Dr. Soumitra Das, a psychiatrist at Western Health, noted that nearly half of the 23 patients referred for mental health support between August 2020 and July 2024 showed signs of psychosis. Nitrous oxide, while used for medical sedation, has a history of recreational abuse, leading to serious health risks, including neurological damage and even death. Recent data from the Coroner's Court of Victoria indicates a rise in nitrous oxide-related fatalities, with four deaths recorded in 2025 alone, compared to none in the previous two decades. The growing trend of using larger canisters has raised concerns about increased exposure and toxicity. Experts emphasize the importance of early intervention for users experiencing symptoms to prevent lasting damage. As authorities consider new regulations, the focus remains on reducing harm while ensuring users receive necessary support.