Photo of a young man with a laughing gas mask The FDA warns that misuse of nitrous oxide is causing serious injuries Flavored nitrous products are being sold in colorful packaging at gas stations and ...

I was 17 years old the first (and only) time I used laughing gas — nitrous oxide — for fun. I was with some friends who showed me. It was sold at the grocery store. As an anxious teenager, I was wary, ...