First of all, it's important to note that every woman has her own natural scent in the vaginal area. A normal odour is usually mild and subtle. It can vary somewhat depending on your menstrual cycle, diet, personal hygiene, and other factors. Since a natural scent is generally discreet and shouldn't be unpleasant, it's worth being aware of any unusual or strong odours, as these can sometimes signal an underlying issue.
Here are some possible causes of strong or unusual vaginal odours:
Bacterial vaginosis: Bacterial vaginosis is a common condition that can cause a “rotten fish” odour. It is caused by an imbalance in the vaginal flora, with an overgrowth of certain bacteria.
Infections: Infections such as trichomoniasis can cause strong vaginal odours, as well as other symptoms such as foul-smelling discharge.
Premature labour: An abnormal opening of the cervix may be a sign of premature labour and may be accompanied by a distinct odour.
Change in odour after sexual intercourse: Sexual intercourse can sometimes temporarily alter vaginal odour. However, a persistent odour or one accompanied by symptoms such as a burning sensation may indicate an underlying problem; in this case, you should also consult a healthcare professional.
Taking antibiotics: Antibiotics can disrupt the balance of the vaginal flora, sometimes causing an unpleasant odour.
Personal hygiene: The use of harsh chemicals, such as certain soaps or wipes, can disrupt the vaginal flora and lead to odours.
Tampons and sanitary pads: The use of tampons or sanitary pads can sometimes trap moisture and cause unpleasant odours.
The menstrual cycle: Odours can vary depending on the menstrual cycle, becoming stronger during menstruation.
Sugar intake: A diet high in sugar can affect body odour, including intimate odour.

