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

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  • Fishy odor
  • Green or yellow discharge
  • Vaginal irritation, itching, or burning
  • Discomfort during urination or intercourse

Because the symptoms can overlap with other conditions, proper testing from a healthcare provider is essential.

3. Poor Hygiene or Trapped Sweat

Sometimes, an unpleasant odor may not be due to infection at all but to sweat and bacteria trapped in tight clothing. Synthetic fabrics, long hours in non-breathable underwear, or not changing quickly after exercise can create an environment where odor builds up.

While this may not usually produce the classic “fishy” smell, it can cause a musty or unpleasant odor. The solution here is straightforward: gentle washing and switching to cotton underwear or other breathable fabrics can make a big difference.

4. Menstruation or Forgotten Tampons

During menstruation, blood can sometimes alter natural vaginal odor. More concerning, however, is the risk of a forgotten tampon. When left inside, a tampon can cause a very strong, rotten-like smell that some women mistake for fishy odor.

If you suspect this, it’s important to remove the tampon promptly. If you’re unable to, seek immediate medical help, as retained tampons can cause serious infections.

When to See a Doctor

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