Bad breath, most commonly called halitosis, is characterized by an unpleasant odor of the mouth. Having bad breath could be really embarrassing while sitting in an office meeting or at a party. Bad breath can occur on any occasion or time and sometimes it may be a chronic condition. In most cases, halitosis may develop from gums or tongue. There can be several reasons for having bad breath like poor oral hygiene, medical conditions or due to the foods that we consume.