Why does my vagina have a bad smell? Meher Saini Asked: August 24, 2020In: Vaginal Discharge Unpleasant vaginal odor can be caused by infection or inflammation in the vagina or vulva. When the normal levels of vaginal bacteria are imbalanced, this can lead to vaginal infections, causing unpleasant vaginal odor. Common causes of smelly vagina include: Remaining in sweaty or wet closed for a long time Forgotten tampon may cause unpleasant vaginal smell Bacterial vaginosis: Infection which occurs due to an overgrowth of normal vaginal bacteria and most common cause of vaginal odor. Trichomoniasis: A sexually transmitted infection in which the femalRead more August 24, 2020 Pristyn Care 0 people found this helpful Was this answer helpful?