Unusual Odor: What a “Fishy Smell” Really Means and When to See a Doctor

Doctors note that there are several conditions most often linked to a strong, unpleasant odor. While some are minor and easily corrected, others require professional treatment.

1. Bacterial Vaginosis (BV)
The most frequent cause of a fishy vaginal odor is bacterial vaginosis. BV occurs when the natural balance of good and bad bacteria inside the vagina is disrupted, allowing certain bacteria to overgrow.

Symptoms of BV may include:

A thin, gray or white discharge
A strong odor, especially after intercourse

Mild itching or burning
Bacterial vaginosis is not considered a sexually transmitted infection, but sexual activity can increase the risk. Importantly, BV requires antibiotics to clear up. Home remedies, scented soaps, or over-the-counter treatments will not resolve it.

2. Trichomoniasis