The medical term for bad breath is halitosis, fetor oris, ozostomia, or stomatodysodia. It means an unpleasant odor of the breath of a person. Halitosis is common among humans around the world and is usually caused by an accumulation of bacteria in the mouth as a result of gum disease, food, or plaque. Often, the person with halitosis does not know about it before others do. Most people nearby may be too embarrassed to say anything.
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