Nitrous oxide is a colourless gas. It has dual nitrogen atoms & a single oxygen atom denoted as N2O. Nitrous oxide is typically used for sedation & pain relief by medical professionals and dental professionals. It has also been misused by people for recreational reasons.
Another use for nitrous oxide gas is as a petrol booster in cars. Nitrous oxide is not flammable at low temperatures. However, when super heated the oxygen is detached and helps combust the cars usual petrol and release more power.
The nitrous oxide sold here is for culinary purposes. It is used as a foaming agent in food & drink, whipping cream, making mousses, infusing flavours into alcohol and many other foodcooking applications.