Nitrous oxide is a colourless gas. It has two nitrogen atoms & 1 oxygen atom written as N2O. Nitrous oxide is typically used for anesthesia and pain relief by medical professionals & dental professionals. It has also been misused by people for recreational reasons.
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 detached & helps burn the cars usual fuel and release more energy.
The nitrous oxide available here is for cooking uses. It can be used as a foaming agent in food & drink, whipping cream, making mousses, infusing flavours into alcohol & lots of other culinary uses.