Reasons for vaginal odour

A mild scent is often normal because the vagina has its own healthy balance of bacteria and acidity. Odour alone cannot identify the cause, and it does not by itself show that someone is unclean.

A fishy smell, especially with a thin grey or white discharge, can occur with bacterial vaginosis. This is a change in the usual vaginal bacterial balance and may happen without much irritation. A strong smell with yellow or green discharge, burning when passing urine, pelvic discomfort, or pain during sex can occur with a sexually transmitted infection or another vaginal or cervical infection.

Sweat, tight clothing, exercise, a retained tampon, menstrual blood, and semen can also temporarily alter scent. Thrush more often causes itching and thick discharge than a strong odour. Symptoms can overlap, so an examination and a swab or urine test may be needed to choose the right treatment.

Wash the vulva gently with lukewarm water and, if needed, a mild unscented cleanser. Keep the area dry, change out of damp clothes, and choose breathable underwear. Do not douche or use scented washes, deodorants, powders, or wipes inside the vagina; these can disturb its natural balance and irritate the skin.

Avoid guessing with leftover antibiotics or over-the-counter products, because treatment depends on the cause. If an infection is diagnosed, follow the full treatment plan and ask whether a sexual partner also needs testing or treatment. Use condoms or pause sex until you have advice, particularly when discharge, pain, or STI exposure is possible.

Arrange a medical appointment if the odour is new, strong, keeps returning, or comes with unusual discharge, itching, soreness, bleeding after sex, pain during sex, or burning when passing urine. Seek prompt care for pelvic pain, fever, vomiting, feeling faint, or feeling very unwell, as these symptoms can point to an infection that needs timely treatment.

If you are pregnant, have recently given birth, have had a procedure, or may have left a tampon in place, contact a clinician promptly about a new unpleasant odour. A clinician can check the vagina and cervix, discuss sexual and menstrual history, and arrange testing rather than relying on smell alone.

You could ask: What causes are most consistent with my discharge and other symptoms? Do I need a vaginal swab, urine test, or STI testing? Should my partner be tested? Which products or activities should I avoid while symptoms settle?