The stinky exhaust after eating garlic is caused by the production of hydrogen and carbon dioxide during the decomposition of garlic, which have a certain odor, so the stinky exhaust will appear during the exhaust. Garlic belongs to a stimulating condiment, which is rich in allicin. A small intake of garlic usually does not cause irritation to the digestive system, and it also has anti-bacterial and anti-toxic effects, which is helpful to health. However, excessive intake of garlic can stimulate the gastrointestinal system to speed up peristalsis, resulting in the production of large amounts of gas in the intestines and therefore increased exhaust. However, this phenomenon does not last too long, and if you stop the intake of garlic, the phenomenon of smelly exhaust will be eliminated naturally.