Bad breath, popularly called breath, is the elimination of unpleasant odors from the mouth. It is not a disease, but a sign that something in the body is not right and needs to be controlled. In medical language it is called halitosis, a word derived from the Latin Halitus, which means exhaled air.

Many people spend years with problems and are discriminated against as a result of bad breath. This happens because the sense of smell gets used to constant smells, letting bad breath go unnoticed.