Why does the nipple have an odor?

Patient's question:

No

Doctor's answer:

Your situation is considered that the bra your girlfriend might be wearing is too tight, which causes the breasts to be unable to breathe and leads to excessive sweating. It is recommended that your girlfriend try wearing a looser bra, bathe frequently, and change her underwear often. If necessary, she can go to the hospital for a breast X-ray examination to rule out any diseases.