A cheese-like smell from your vagina or vulva usually comes from one of two things: a buildup of natural skin oils and dead cells on the vulva (called smegma), or a yeast infection that produces thick, cottage cheese-like discharge. Both are common, neither is dangerous, and both are straightforward to deal with.
Smegma: The Most Overlooked Cause
Your vulva has oil glands, sweat glands, and folds of skin where dead cells, oils, and moisture can collect. This buildup is called smegma, and it’s a completely normal byproduct of having skin. When it accumulates in the folds around the clitoral hood or between the labia, bacteria start feeding on it. That bacterial activity produces a distinctive sour, cheesy smell, sometimes compared to sour milk.
Smegma can look like crumbly cheese and tends to build up when you don’t gently clean the folds of your vulva with warm water. It’s not an infection and it’s not an STI. The fix is simple: gently pull back the folds of skin during a shower and rinse with warm water. Soap isn’t necessary and can actually irritate the area, but a mild, unscented soap on the outer vulva is fine if you prefer it. Once the buildup is cleared, the smell goes away.
Yeast Infections and Cottage Cheese Discharge
If the cheese-like quality is more about your discharge than a surface smell, a yeast infection is the likely culprit. Yeast (Candida) lives naturally in the vagina, but when it overgrows, it produces a thick, white discharge that looks like cottage cheese. Despite the visual similarity to cheese, yeast infection discharge often has little to no odor, or a mild bread-like, yeasty scent rather than a strong smell.
The more noticeable symptoms of a yeast infection are intense itching, redness, swelling of the vulva, and burning during urination or sex. If you’re experiencing these alongside the discharge, a yeast infection is very likely. The vaginal pH during a yeast infection stays in the normal range of 4.0 to 4.5, which is one reason it doesn’t produce the strong fishy odor associated with other infections.
Over-the-counter antifungal creams and suppositories are the standard first treatment. These come in one-day, three-day, and seven-day options. Most yeast infections clear up within a few days of starting treatment, though it can take a full week. A single-dose oral antifungal pill is also available by prescription. If you get four or more yeast infections in a year, that’s considered recurrent and typically requires a longer treatment plan.
How Sweat Contributes to the Smell
Your groin has a high concentration of apocrine sweat glands, which produce a thicker type of sweat than the watery sweat on your forehead or arms. This sweat is odorless on its own, but bacteria on your skin break it down into compounds that smell strong and sour. Tight clothing, synthetic underwear, and long periods of sitting can trap heat and moisture, giving bacteria more to work with. The result can be a pungent, cheese-like or fermented odor that’s coming from your skin rather than from inside the vagina.
Switching to breathable cotton underwear, changing out of sweaty workout clothes promptly, and washing the outer vulva daily with water are usually enough to manage sweat-related odor.
Bacterial Vaginosis Smells Different
It’s worth knowing what a cheese-like smell is not. Bacterial vaginosis (BV), the most common vaginal infection, produces a thin, grayish discharge with a fishy smell that becomes especially noticeable after your period or after sex. The vaginal pH rises above 4.5 with BV, creating a distinctly different chemical environment than what causes a cheesy smell. If what you’re smelling is more fishy than cheesy, BV is the more likely cause, and it requires a different treatment (prescription antibiotics rather than antifungals).
Trichomoniasis, a sexually transmitted infection, pushes pH even higher (above 5.4) and can produce a frothy, yellowish-green discharge with a strong odor. Again, this is a different smell profile than cheese-like odors.
When the Smell Signals Something More
A mild, cheese-like odor that resolves with better hygiene or a short course of antifungal treatment is nothing to worry about. But certain symptoms alongside the smell point to something that needs medical attention: fever, pelvic pain, discharge that’s green or yellow, bleeding between periods, or a smell that persists despite treatment. If you’ve tried an over-the-counter antifungal and your symptoms haven’t improved within a week, or if you’re unsure whether you’re dealing with a yeast infection versus something else, getting tested gives you a clear answer and the right treatment.