Nitrous oxide is a colourless gas. It has two nitrogen atoms and a single oxygen atom shortened as N2O. Nitrous oxide is typically used for anesthesia & pain relief by medical doctors and dentists. 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 cooler temperatures. However, when super heated the oxygen is release & helps combust the cars normal fuel and release more power.
The nitrous oxide sold here is for cooking purposes. It is utilised as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol and many other culinary uses.