![People inhale nitrous oxide (laughing gas) from balloons in Parliament Square in a mass inhalation protest against proposed legal ban on psychoactive substances Stock Photo - Alamy People inhale nitrous oxide (laughing gas) from balloons in Parliament Square in a mass inhalation protest against proposed legal ban on psychoactive substances Stock Photo - Alamy](https://c8.alamy.com/zooms/6/4f20759591c14a47806538c15f913343/m3y07y.jpg)
People inhale nitrous oxide (laughing gas) from balloons in Parliament Square in a mass inhalation protest against proposed legal ban on psychoactive substances Stock Photo - Alamy
![Nightclubs selling laughing gas warned they face prosecution for offering potentially lethal substance - Mirror Online Nightclubs selling laughing gas warned they face prosecution for offering potentially lethal substance - Mirror Online](https://i2-prod.mirror.co.uk/incoming/article3149074.ece/ALTERNATES/s1200/Laughing-gas-balloon-craze-posed-by-model.jpg)
Nightclubs selling laughing gas warned they face prosecution for offering potentially lethal substance - Mirror Online
![People inhale nitrous oxide (laughing gas) from balloons in Parliament Square in a mass inhalation protest against proposed legal ban on psychoactive substances Stock Photo - Alamy People inhale nitrous oxide (laughing gas) from balloons in Parliament Square in a mass inhalation protest against proposed legal ban on psychoactive substances Stock Photo - Alamy](https://c8.alamy.com/comp/M3Y07Y/people-inhale-nitrous-oxide-laughing-gas-from-balloons-in-parliament-M3Y07Y.jpg)