Vaginal odour is a common concern that many women experience at different points in their lives.
While a mild, musky scent is completely natural, a strong or unpleasant odour can sometimes signal an imbalance in the vaginal environment.
Understanding the science behind vaginal odour helps in identifying its causes and adopting effective treatment methods.
The vagina is home to a complex ecosystem of microorganisms, primarily beneficial bacteria known as Lactobacilli. These bacteria help maintain an acidic environment (pH between 3.8 and 4.5), which prevents the growth of harmful microbes.
However, when this balance is disrupted, certain bacteria can overgrow, leading to changes in odour, discharge, and sometimes irritation. This imbalance is often referred to as bacterial vaginosis (BV)—the most common cause of unusual vaginal odour.
Other possible causes include:
Yeast infections (Candidiasis): Caused by an overgrowth of Candida albicans, often accompanied by a yeasty smell and thick white discharge.
Sexually transmitted infections (STIs): Such as trichomoniasis, which produces a strong, fishy smell and greenish discharge.
Poor hygiene or excessive cleansing: Overwashing, especially with scented soaps, can strip the vagina of its protective flora.
Hormonal changes: Menstrual cycles, pregnancy, and menopause can all influence vaginal pH and scent.
