When I take my tampon out it smells like rotten eggs?

Why Does My Tampon Smell Like Rotten Eggs?

You're not alone if you've noticed a strange, sulfur-like odor when removing your tampon—some describe it as smelling like rotten eggs. While it can be alarming, a mild change in scent is often normal, but a strong, unpleasant smell could be a sign of something more.

Menstrual blood itself isn’t typically odorous, but once it mixes with air, bacteria, and vaginal flora, it can develop a distinct smell. A foul, rotten-egg-like odor often points to stagnant blood and bacteria buildup, especially if a tampon has been in place too long. It’s your body’s way of signaling that it’s time for a change—especially on heavy-flow days when tampons can become saturated quickly.

Leaving a tampon in for more than 8 hours increases the risk of bacterial overgrowth and even toxic shock syndrome (TSS), though rare. A forgotten tampon—left in for days—can also cause a strong, unpleasant odor and may come with other symptoms like discharge, itching, or discomfort. If that’s the case, removing it promptly and maintaining hygiene usually resolves the issue.

To keep things fresh and healthy, aim to change your tampon every 4 to 8 hours. Consider using lower-absorbency tampons on lighter days and switching to pads at night. If you're sensitive to odors, fragrance-free, breathable products can help reduce bacterial interaction.

Most importantly, trust your instincts. If the smell persists despite good hygiene, or if you experience fever, pain, or unusual discharge, it’s worth seeing a healthcare provider. A strong rotten smell isn’t just about comfort—it can be a clue your body is trying to tell you something. Better safe, informed, and odor-free.