Nitrous oxide is a colourless gas. It has dual nitrogen atoms & a single oxygen atom shortened as N2O. Nitrous oxide is usually used for anesthesia & pain relief by medical doctors & dental professionals. It has also been misused by people for recreational purposes.
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 release and helps combust the cars ordinary petrol and release more power.
The nitrous oxide available here is for culinary purposes. It is used as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol and lots of other culinary uses.