If farting is very loud and smelly, it may be a physiological phenomenon, such as indigestion, or a pathological phenomenon, such as intestinal flora imbalance, diarrhea or enteritis. 1. Physiological phenomenon: indigestion, that is, the decline in digestive function, especially in the gastrointestinal tract to promote digestion of digestive enzymes significantly reduce the food in the gastrointestinal tract, a large number of storage, resulting in poor fermentation, especially protein foods, the fermentation process will produce a relatively foul odor, the phenomenon of farts and stink. In ordinary life, add enough water needed by the body, you can eat more fresh vegetables and fruits, supplement vitamins and fiber, keep the stool smooth, timely discharge of toxins in the body. 2. Pathological phenomenon: intestinal diseases can lead to intestinal dysfunction, because of intestinal peristalsis to accelerate the gas discharge, resulting in farting and stinking phenomenon. (1) Intestinal flora dysbiosis: The onset of intestinal flora dysbiosis is mostly related to gastrointestinal diseases, medication factors, dietary habits and age factors. Oral probiotic compound acidophilus tablets and bifidobacterium tablets can be taken to improve intestinal flora imbalance, inhibit bacterial reproduction and alleviate the phenomenon of farting and stinking. (2) Enteritis: Common causes are categorized into infectious and non-infectious. Infectious factors are mostly caused by bacteria, viruses, parasites and so on; non-infectious factors include dietary factors, medication factors, climatic factors and so on. Infectious factors are mostly caused by bacteria, viruses, parasites, etc. Non-infectious factors include dietary factors, medications and climatic factors. If you feel unwell, you should consult a doctor to find out the cause and follow the doctor’s instructions.