Infant farting is very smelly usually means farting is very smelly, the main reason and gastrointestinal type cold, indigestion, constipation and other factors related. 1. gastrointestinal cold: for infants, because it is still relatively small, so parents should pay more attention to care, if you do not pay attention to the warmth of the baby’s abdomen, may be due to abdominal cold, and promote gastrointestinal peristalsis accelerated, the food is not fully digested and discharged from the body, which will be obvious farting very smelly symptoms. 2. Indigestion: some babies may be fed poorly by their parents, which may cause indigestion. After the food is broken down by the bacteria in the intestine, more gas will be produced, which will then be discharged through farting, accompanied by the symptom of smelly fart. 3. Constipation: Farting in infants may also be related to constipation, for example, when infants do not have bowel movements for a long time, which in turn produces the symptom of farting. There may also be other reasons for farting in infants, which should be clarified by the doctor as soon as possible and then dealt with.