Nitrous oxide is a colourless gas. It has 2 nitrogen atoms and 1 oxygen atom shortened as N2O. Nitrous oxide is typically used for anesthesia & pain relief by medical doctors & dental professionals. 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 combust the cars normal fuel and release more energy.
The nitrous oxide available here is for food & drink purposes. It can be used as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol & many other culinary applications.