Nitrous oxide is a colourless gas. It has two nitrogen atoms and one 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 fuel booster in cars. Nitrous oxide is not flammable at low temperatures. However, when super heated the oxygen is broken off and helps burn the cars usual fuel and release more energy.
The nitrous oxide available here is for culinary uses. It is used as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol & lots of other culinary uses.