Farting very smelly in early pregnancy may be caused by improper diet of pregnant women, hormonal effects, uterine expansion, environmental factors and other reasons. 1. Improper diet: If you eat some easy gas-producing foods in early pregnancy, such as milk, soy, leeks, etc., you are prone to farting very smelly. 2. Hormonal effects: after pregnancy, the hormone level changes in pregnant women’s body, which may lead to the slowing down of intestinal function, bloating, constipation and so on, and some pregnant women may also be accompanied by farting very smelly and other manifestations. 3. Uterine expansion: when pregnant, as the fetus increases in size, the uterus expands to put pressure on the intestines, and defecation is not smooth enough, which may lead to symptoms such as farting that smells bad, and may be accompanied by flatulence, constipation and other symptoms. 4. Environmental impact: In early pregnancy, if the abdomen of pregnant women is cold, the gastrointestinal tract is easily stimulated, and some pregnant women may experience smelly farts as a result. If a pregnant woman has a smelly fart in early pregnancy, accompanied by abdominal pain and other symptoms, it is recommended to consult a doctor in time, under the guidance of the doctor, improve the relevant examination, clarify the cause of the disease, and symptomatic treatment.