Nitrous oxide is a colourless gas. It has two nitrogen atoms & a single oxygen atom shortened as N2O. Nitrous oxide is typically used for sedation & pain relief by medical professionals and dentists. 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 low temperatures. However, when super heated the oxygen is release and helps burn the cars normal fuel and release more power.
The nitrous oxide available here is for culinary purposes. It is used as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol & lots of other foodcooking applications.