Having an unpleasant odor in your mouth is called halitosis. Bad breath is not an independent disease, but a symptom. To eliminate bad breath, you must first know what causes bad breath. Bad breath can be divided into the following types: ①Food-induced bad breath. Food-induced bad breath will occur if you do not clean your mouth in time after eating onions, garlic, leeks, mutton and other foods. Put tea leaves and dates in your mouth and chew carefully…