Smelly farts during pregnancy may be related to eating gas-producing foods, unbalanced diet and gastrointestinal disorders. 1. Eating gas-producing food: Generally speaking, if pregnant women eat too much gas-producing food, such as onion, radish, garlic, etc., this kind of food is easy to induce farting and smelly. 2. Dietary imbalance: If you eat greasy, high-protein food for a long time and lack dietary fiber, the food residue will easily stay in the intestines. Food residue is easy to stay in the intestinal lumen, when the food residue stays for a long time, under the fermentation of intestinal bacteria, the protein can produce more amines, triggering the odor. 3. Gastrointestinal tract dysfunction: It can lead to smelly farts during pregnancy and may be accompanied by constipation or diarrhea. When farting during pregnancy, you can prioritize the dietary structure, diet should be light, and nutritional balance, increase the intake of fresh vegetables, if the symptoms continue to be unable to alleviate, it is recommended to consult a doctor in a timely manner.