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Why do boils stink when they pop?

Author

Isabella Bartlett

Updated on May 04, 2026

Hidradenitis suppurativa (HS) usually smells when HS cysts/boils break open and ooze pus. The smell is from the content of the cyst, which consists of bacteria and broken down cells from human tissue. Anaerobic bacteria, a type of bacteria that thrive in low oxygen conditions in wounds, often infect HS cysts.

Why does my popped boil smell?

Sweat, bacteria, and skin tissues that are infected and inflamed all contribute to the smell that occurs with HS. A typical painful nodule will last seven to 15 days. During this time, the boil may erupt, creating painful deep abscesses, or holes. The pus that erupts from the boil can be foul-smelling.

What does foul smelling pus mean?

An abscess is a collection of pus. Pus is a thick fluid that usually contains white blood cells, dead tissue and germs (bacteria). The pus may be yellow or green and may have a bad smell. The usual cause is an infection with bacteria.

What comes out of a burst boil?

Over time, pus forms inside the boil, making it bigger and more painful. Most boils eventually burst. The pus then drains away without leaving a scar. This can take from two days to three weeks to happen.

What is the hard white stuff in a boil?

As a boil matures, it grows larger, and its center fills with pus. This pus-filled center is called the core. Eventually, the boil comes to a head, meaning a yellow-white tip develops on top of the core.

What causes body odor? - Mel Rosenberg

Why do I keep getting boils on my private area?

Boils near the vagina are caused by bacteria that enter through the skin and infect a hair follicle. Keeping your genital area clean and practicing good hygiene is the best way to prevent recurring boils. If you shave your pubic area with a razor, change your razor often.

Will the core of a boil come out by itself?

Over time, a boil will develop a collection of pus in its center. This is known as the core of the boil. Do not attempt to remove the core at home as doing so can cause the infection to worsen or spread to other areas. Boils can go away on their own without medical intervention.

What to do after popping a boil?

When the boil starts draining, wash it with an antibacterial soap until all the pus is gone and clean with rubbing alcohol. Apply a medicated ointment (topical antibiotic) and a bandage. Continue to wash the infected area two to three times a day and to use warm compresses until the wound heals.

How do you know when a boil is done draining?

Should Boils Be Drained? As long as the boil is small and firm, opening the area and draining the boil is not helpful, even if the area is painful. However, once the boil becomes soft or "forms a head" (that is, a small pustule is noted in the boil), it can be ready to drain. Once drained, pain relief can be dramatic.

Is it OK if a boil pops on its own?

According to a 2018 article , a person should never attempt to pop a boil themselves. Popping or squeezing a boil can allow bacteria to infect deeper layers of the skin, as well as other tissues and organs. This can lead to serious, life-threatening complications. Boils can heal on their own without medical treatment.

Does a smelly wound mean infection?

If a wound continues to emit an unpleasant odor, even with proper cleaning and care, there may be cause for concern. While any wound can be accompanied by a smell, most individuals can recognize one that is overly strong or just isn't quite right and may be a sign of infection.

Where does pus go if not drained?

While waiting is never fun, it's worth it when it comes to pimple-popping. Basically, what happens if you don't pop a whitehead is that it goes away on its own, usually in 3 to 7 days. It may happen that you wake up one morning and notice the pimple is gone. Or you may notice the pimple draining.

Is it good for pus to come out?

Should I drain pus out of an infected wound? No, you should not drain pus out of an infected wound yourself. Let a doctor or medical professional handle treatment. Follow their instructions for proper care.

Is it normal for a boil to smell?

In some cases the boil may smell unpleasant, which is usually when the boil drains and this is caused by the existence of bacteria within the pus.

What does pus smell like?

Depending on the location and type of infection, pus can be many colors, including white, yellow, green, and brown. While it sometimes has a foul smell, it can also be odorless.

Why does pus smell like cheese?

A cyst typically has two features: the lining, and the contents. The lining of an epidermoid cyst is made up of skin cells, which secrete keratin. Keratin is the material that makes up the hair, and the outer layer of skin. The contents of an epidermoid cyst are soft and “cheese-like,” with an unpleasant smell.

What is a boil filled with blood?

Over time, the area becomes firm, hard, and increasingly tender. Eventually, the center of the boil softens and becomes filled with infection-fighting white blood cells from the bloodstream to eradicate the infection. This collection of white blood cells, bacteria, and proteins is known as pus.

Does a boil leave a hole?

A boil will always start to "point" towards the skin surface and will eventually burst, draining the pus, relieving pain and will then heal. This whole process can take 2 weeks, and often doctors will "lance" the boil early - make a deliberate hole in it to allow the pus to drain - to speed up the healing process.

Why do I get boils on my inner thighs?

Often bacteria get trapped in a hair follicle or oil gland due to friction or trauma to the skin. Inner thighs are a common site for boils because your thighs can rub against each other and get sweaty, especially in hot and humid weather. This encourages bacteria to grow within the follicles.

What does a MRSA boil look like?

One or More Swollen Red Bumps Draining Pus

Sometimes MRSA can cause an abscess or boil. This can start with a small bump that looks like a pimple or acne, but that quickly turns into a hard, painful red lump filled with pus or a cluster of pus-filled blisters.

Can STD cause boils?

Sexually transmitted infections and genital piercings can also be underlying causes of vaginal boils. Women with oily skin or those with thicker pubic hair growth are more at risk for vaginal abscesses, according to The Royal Women's Hospital.

How do you get rid of boils forever?

Boils usually go away on their own, but can also reoccur. If you have recurring boils, contact your doctor to diagnose the reason for the recurrence. Your doctor can help treat the current boil and put together a course of action to prevent it from returning, like hygiene adjustment or antibiotic treatment.

What does an abscess smell like?

What are the signs and symptoms of an abscess? You may have a swollen mass that is red and painful. Pus may leak out of the mass. The pus will be white or yellow and may smell bad.

What color is staph infection pus?

People often refer to MRSA as 'golden staph' because the infected pus is yellow/gold in colour. Most staph infections are treated with antibiotics, and there are still some antibiotics that can successfully treat MRSA infections.

What do different colors of pus mean?

The whitish-yellow, yellow, yellow-brown, and greenish color of pus is the result of an accumulation of dead neutrophils. Pus can sometimes be green because some white blood cells produce a green antibacterial protein called myeloperoxidase.