Frequent farting and very smelly may be caused by constipation, intestinal flora imbalance, intake of food containing a large amount of protein and other reasons. 1. Constipation: This is because stools cannot be discharged in time, accumulate in the intestines and continue to be absorbed, the feces become abnormally dry and easy to harbor bacteria, resulting in a very smelly phenomenon during the exhaust. 2. Dysbiosis of intestinal flora: There are many intestinal bacteria, including beneficial and pathogenic bacteria. Under normal circumstances, the two are in dynamic balance. If the intestinal flora is out of balance, it will also lead to the phenomenon of frequent and smelly exhaust. 3. Consumption of food containing a lot of protein: If you eat a lot of protein-rich food in a short period of time, such as soybeans, animal meat, etc., the phenomenon of frequent and smelly flatulence will also occur. If the above situation persists for a long time, it is recommended that the patient go to the hospital in time to find out the cause of the disease under the guidance of the doctor and carry out the correct treatment.