Nitrous oxide is a colourless gas. It has dual nitrogen atoms & 1 oxygen atom written as N2O. Nitrous oxide is typically used for anesthesia & pain relief by medical professionals & 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 release and helps burn the cars ordinary fuel and release more energy.
The nitrous oxide sold here is for culinary uses. It can be used as a foaming agent in food & drink, whipping cream, making mousses, infusing flavours into alcohol & lots of other culinary applications.