Nitrous oxide, commonly known as laughing gas, nitrous, or nos, is a chemical compound, an oxide of nitrogen with the formula N2O. At room temperature, it is a colourless non-flammable gas, with a ...

Nitrous oxide, commonly known as laughing gas or happy gas, is a colorless, non-flammable gas, with a sweetish odor. It's used in medical and dental procedures as a sedative, relieving anxiety and ...