Chronic halitosis may be caused by poor oral hygiene, gingivitis (gum disease),oropharyngeal infections or a dental abscess
Bad body odor is caused by smell
of bacteria growing on the body. These bacteria multiply rapidly in the presence of sweat, but sweat itself is almost completely odorless. Body odor is associated with the hair, feet, groin (upper medial thigh), anus, skin in general, armpits, genitals, pubic hair, and ears.