The main way to remove bad breath from stomach cold is to relieve stomach cold and indirectly treat bad breath. 1, eat more food that nourishes the stomach, such as drinking warm milk, eating more peanuts and red beans, while peanuts and red beans are rich in dietary fiber, which can also promote defecation and reduce bad breath caused by persistent stool. 2, reduce the consumption of food that stimulates the stomach and can cause greater odor, such as raw onions, raw garlic and chili peppers. 3, perform gastroscopy and Helicobacter pylori The first thing you need to do is to take a look at the results of the study.