What do you know about Nitrous Oxide? The Royal College of Nursing says the public need to be made aware of its dangers. It was made illegal to sell it for psychoactive purposes three years ago, but the Home Office estimates that in the last year, half a million 16 to 24 year olds in England and Wales used it. Laughing gas or ‘Noz,’ is particularly popular during the music festival season. Jane speaks to Catherine Gamble, Royal College of Nursing Professional Lead for Mental Health Nursing.