Bad breath may: Result from inadequate oral hygiene: food left behind can break down & cause odor. Tooth decay can also cause mouth odor. Sinus conditions with chronic drainage may add to problem. Infections of throat can cause bad smell as well. Brush teeth & tongue, floss daily; rinse with mouth wash. See fp about sinus/throat infection. See dentist for regular cleaning.
Answered 5/9/2018
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