Nitrous oxide, commonly known as laughing gas, is a colorless, non-flammable gas that has been used as an anesthetic and pain reliever for over 150 years. It is commonly used by dentists to help patients relax during dental procedures.
When inhaled, nitrous oxide binds to receptors in the brain, producing feelings of euphoria, relaxation, and pain relief. It also has sedative and amnesic effects, which can help patients forget about their anxiety or discomfort during the procedure.