What should you know about strange vaginal odour?

A changed vaginal odour can result from normal cycle changes, trapped blood, sweating, or an infection that needs assessment. Odour alone cannot identify the cause, so new or persistent change is worth discussing with a clinician, especially when discharge, itching, pain, or bleeding is also present.

A mild scent can vary during menstruation, after sex, or with perspiration. A strong fishy smell may occur with bacterial imbalance, while an unpleasant smell with pain, fever, or abnormal discharge can occur with infection. A forgotten tampon or another retained object can also cause a marked odour. These possibilities overlap, and an examination or swab may be needed rather than guessing from smell.

Wash the external vulval area gently with water or an unscented product and keep it dry. Avoid douching, perfumed washes, deodorant sprays, and inserting home remedies, because they can irritate tissue or disturb the vaginal balance. Change out of damp clothing and use clean, breathable underwear. Arrange an appointment if the odour lasts, returns, or comes with discharge or irritation. Do not use leftover antibiotics; treatment depends on the cause and may require testing.

Seek prompt medical care for odour with pelvic pain, fever, pain during sex, bleeding after sex, pregnancy, or a retained tampon concern. Urgent assessment is appropriate for severe pain, faintness, heavy bleeding, or feeling acutely unwell. A pelvic infection may need prescription treatment such as [Antibiotic Treatment for Pelvic Infection](/treatments/medical-gynaecology/antibiotic-treatment-for-pelvic-infection/), selected after clinical assessment.

Could this be an infection or irritation? Do I need a vaginal swab or an examination? Could a retained tampon be involved? Should my partner be assessed? Which symptoms mean I should seek urgent help?