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Nitrous oxide, also known as nitrous oxide or N2O, is a colorless, odorless gas that is used to sedate patients prior to dental surgery. It is also used in baking industry as a fuel for the whipped cream and other ingredients. The effect of inhalation has been described as euphoric, and has been in use since late 1700. These euphoric effects have led to abuse of gas, and regulation of sales and penalties for illegal sales.