Foods with high sulfur composition, such as red meat, milk, or plant-based proteins, are the culprits of producing the foul odor. When we feed the bacteria in our gut high-protein foods, they produce a sulfur gas, which makes your farts noxious, says Dr. Brand.Oct 6, 2016,
Food intolerance is a very common cause of bad odor flatulence. Typical conditions that can cause smelly flatulence include lactose and gluten intolerances. In both of these conditions, the body's inability to break down lactose or gluten causes smelly gas to build up and eventually be released.
There is oxygen and nitrogen from swallowed air, while hydrogen, methane and carbon dioxide are produced when bacteria in the large intestine ferment the carbohydrates we eat. The distinctive rotten-egg whiff is caused by traces of hydrogen sulphide, which gut bacteria are known to produce from protein.Oct 14, 2016