Nitrous oxide is a colourless gas. It has 2 nitrogen atoms & 1 oxygen atom denoted as N2O. Nitrous oxide is usually used for sedation and pain relief by medical professionals and dentists. 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 detached and helps combust the cars ordinary petrol and release more energy.
The nitrous oxide available here is for cooking uses. It can be used as a foaming agent in food & drink, whipping cream, making mousses, infusing flavours into alcohol and lots of other culinary applications.