Nitrous oxide is a colourless gas. It has two nitrogen atoms & 1 oxygen atom shortened as N2O. Nitrous oxide is usually used for sedation & pain relief by medical doctors & dentists. 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 lowwer temperatures. However, when super heated the oxygen is detached and helps burn the cars ordinary fuel and release more energy.
The nitrous oxide sold here is for cooking purposes. It is used as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol & lots of other culinary uses.