Vaginal odour: what is normal and when to be concerned
Every vagina has a mild natural odour. How to tell a normal scent from a sign of infection, the most common cause, and what daily care actually helps.
Every woman's vagina has a mild, natural scent — this is normal and nothing to be embarrassed about. But if the odour changes noticeably and becomes unpleasant, it may be a sign of infection. So how do you tell the difference?
Why a mild odour is normal
Beneficial bacteria called lactobacilli live in the vagina. They keep it in a mildly acidic environment and prevent harmful microbes from multiplying. Thanks to this natural balance, a faint, almost odourless scent and a clear or slightly whitish discharge are entirely normal. The amount of that discharge can increase from time to time with the menstrual cycle, with sexual arousal or in pregnancy — that too is normal.
Which odour counts as abnormal
If the smell distinctly resembles fish, and is accompanied by a change in colour (grey, yellow-green), itching, burning or irritation, it may be a sign of infection.
The most common cause: bacterial vaginosis
The most frequent cause of vaginal odour is a condition called bacterial vaginosis. Do not think of it as a complicated disease — it is a temporary disturbance in the natural balance of bacteria in the vagina. The beneficial bacteria decrease and the odour-producing bacteria increase. The smell often becomes more noticeable after sex or around a period.
Other possible causes
- Trichomonas: a sexually transmitted organism that can cause a frothy, yellow-green discharge.
- A forgotten tampon: a tampon left inside can cause a very unpleasant odour and needs removing urgently.
- Thrush: worth clearing up — a yeast infection does not cause an unpleasant odour. It causes intense itching and a thick, cottage-cheese-like discharge that has no smell. If there is an odour, another infection is usually present alongside it.
When to see a doctor
It is worth seeing a gynaecologist if any of the following apply:
- the odour has changed noticeably and resembles fish
- the discharge is grey, green or dark yellow
- there is itching, burning or irritation
- there is pain during sex, or bleeding afterwards
- there is a general sense of being unwell — fever, abdominal pain
Daily care
- Do not wash inside the vagina. The vagina cleans itself; washing inside with soap or water (douching) kills the beneficial bacteria and can make things worse.
- Wash only the outside, with warm water. Avoid perfumed soaps and scented pads or wipes.
- Keep the area dry. Do not stay for long in a wet swimsuit or sweaty clothes.
- Choose cotton underwear. Tight, synthetic fabrics trap moisture and set the stage for odour.
- Wipe from front to back. This prevents bowel bacteria being carried to the vagina.
Frequently asked questions
Should there be no odour at all?
No — a mild, characteristic scent is normal. What matters is a distinct change that becomes unpleasant.
Will the odour go away on its own?
Mild imbalances sometimes settle by themselves, but a distinct and persistent odour usually needs treatment. Seeing a doctor is the right course.
See also vaginal discharge.