Body odor, Bromhidrosis or body odour is the smell of sweat and whatever bacteria are growing on the body. It is specific to the individual (except for identical twins in the same environment) and can be used to identify people, though this is more often done by dogs than by humans. An individual's bodily odor is influenced by diet, gender, heredity, health, medication, occupation, and mood. Body odor is associated with the hair, skin, breasts, armpits and genitals.