Nitrous oxide is a colourless gas. It has two nitrogen atoms & 1 oxygen atom written as N2O. Nitrous oxide is usually used for anesthesia and 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 fuel booster in cars. Nitrous oxide is not flammable at low temperatures. However, when super heated the oxygen is detached & helps combust the cars ordinary fuel and release more power.
The nitrous oxide sold here is for culinary purposes. It is utilised as a foaming agent in food & drink, whipping cream, making mousses, infusing flavours into alcohol & many other culinary uses.