User:LaughingOnion/be bold

Laughing Onions contain chemical compounds that causes humans to laugh upon exposure. Common onions of the genera Allium release a volatile gas syn-Propanethial S-oxide when the bulb is cut. This gas is an eye irritant which causes tearing. Laughing Onions release a gas that causes uncontrolled laughter in human. There is no evidence of the existence of Laughing Onions.