
Pimples can emit a range of odours, from cheese to garlic, rotten eggs, or onions, and are usually caused by a combination of factors, including the type of bacteria present on the skin, personal hygiene practices, and the severity of the acne. While an occasional stinky pimple is normal, certain smells can indicate a more serious skin condition. For example, a pungent, sulphuric smell could be a symptom of acne conglobata, a rare and severe form of acne that causes significant scarring and psychological distress. Another possible cause of cheesy-smelling pimples is an epidermoid cyst, a non-cancerous bump under the skin that can develop due to blocked hair follicles or injuries. These cysts typically contain a foul-smelling, yellowish, cheese-like substance made of the protein keratin.
| Characteristics | Values |
|---|---|
| Likely cause | Epidermoid cyst |
| Cyst composition | Dead skin cells, keratin, bacteria, and other substances |
| Cyst texture | Thick, soft, and cheese-like |
| Cyst colour | Yellow |
| Cyst smell | Pungent, foul, unpleasant |
| Cyst treatment | Surgical excision |
| Accompanying symptoms | Pain, inflammation, scarring |
| Accompanying conditions | Acne vulgaris, acne conglobata, cystic acne |
| Prevention | Good personal hygiene, keeping the site clean |
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What You'll Learn

Poor hygiene can cause pimples to smell like cheese
Poor hygiene can indeed cause pimples to smell like cheese. While the smell of acne is influenced by various factors, including the type of bacteria on the skin, personal hygiene practices, and the severity of the acne, maintaining good hygiene practices around acne-prone areas is crucial.
Acne is an inflammatory skin disorder caused by clogged pores, trapping bacteria, dead skin cells, and sebum beneath the skin's surface. Poor hygiene practices can exacerbate this condition, leading to secondary bacterial infections and more severe infections with stronger odors. Therefore, keeping the skin clean is essential to prevent the spread of bacteria and manage acne-related odors.
The presence of certain bacteria, such as C. acnes, can significantly influence the odor associated with acne. These bacteria metabolize the matter within the skin, producing byproducts that sometimes include sulfur compounds. These sulfur compounds emit a pungent, rotten egg-like aroma, contributing to the distinct smell of acne.
In addition to the type of bacteria, the severity of acne plays a role in its odor. As acne progresses from mild to severe stages, it creates an increasingly hospitable environment for bacteria to thrive. More severe infections can result in pus discharge with a stronger odor. This pus is composed of dead white blood cells, blood, debris, and bacteria, and the greater the amount of pus, the more pronounced the smell may become.
While mild acne typically does not produce a strong smell, moderate to severe acne with pus discharge is more likely to have a noticeable odor. Poor hygiene practices can further intensify this odor by providing an opportunity for additional bacteria to flourish, leading to more severe infections and stronger-smelling acne.
To effectively manage smelly pimples, it is essential to consult a dermatologist for a proper diagnosis and appropriate treatment. Treatment options may include oral medications, topical treatments, or alternative therapies tailored to the specific needs of the individual's skin condition. Maintaining good hygiene practices is crucial not only for general health and cleanliness but also for managing the overall scent of the skin.
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The presence of bacteria can cause a cheesy odour
The presence of certain bacteria on the skin can cause some pimples to emit a cheesy odour. This occurs when bacteria encounter ideal conditions for growth, such as blocked pores filled with sebum and dead skin cells. As these bacteria feed on the matter within the skin, they produce by-products that can include sulfur compounds, resulting in a pungent smell.
The type of bacteria present on the skin is a significant factor in the development of odour. Anaerobic bacteria, in particular, produce their own sulfur compounds as they grow, which can result in a pungent smell of garlic or onions when a pimple is popped. Poor personal hygiene practices can also contribute to the formation of odour and acne. Inadequate skin cleansing allows bacteria to proliferate, leading to more severe infections and stronger odours.
The severity of the acne condition also influences the presence of odour. Moderate to severe acne with pus discharge is more likely to have a noticeable smell. Acne conglobata, a rare form of nodulocystic acne, is characterised by large, painful cysts deep beneath the skin and can result in a foul odour reminiscent of rotten eggs.
However, it is important to note that the smell of acne is usually not a cause for serious concern. In most cases, it is simply an indication of the presence of bacteria and the severity of the acne condition. Nonetheless, if the odour is frequent and persistent, it is advisable to consult a dermatologist for a proper assessment and appropriate treatment.
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Epidermoid cysts can cause a cheese-like smell
The presence of bacteria, the intensity of an acne breakout, and personal hygiene practices all contribute to the distinctive scent of a pimple. While an occasional stinky pimple is not uncommon, some scents can signal more serious skin issues. A pungent, yellowish, cottage-cheese-like secretion is likely due to an epidermoid cyst, a noncancerous bump beneath the skin.
An epidermoid cyst is a harmless growth that occurs due to a blocked hair follicle. They are slow-growing and usually painless, but they can sometimes cause distress and become inflamed or infected. These cysts contain a soft, cheese-like substance known as keratin, a protein that makes up the hair and the outer layer of skin. When drained, this substance looks thick and yellow and has a foul odour.
The formation of an epidermoid cyst can be attributed to various factors. Dead skin cells can accumulate deep in the skin and, instead of sloughing off as they should, they get trapped within the cyst. This can happen due to an injury, irritation, or skin damage, which causes a breakdown in the protective barrier, allowing bacteria and other substances to enter and form a cyst.
While epidermoid cysts typically do not require treatment, they can sometimes cause discomfort or cosmetic concerns. In such cases, a healthcare professional may recommend surgical excision to remove the cyst completely. This procedure is typically done under local anaesthesia, and it is essential to keep the cyst wall intact to reduce the risk of recurrence. If excision is not possible, the cyst may be drained with a needle, and antibiotics may be prescribed if an infection is present.
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Acne conglobata can result in a pungent aroma
Acne conglobata is a rare and severe form of nodulocystic acne. It usually presents with tender, disfiguring, double or triple interconnecting comedones, cysts, inflammatory nodules, and deep burrowing abscesses. The cysts often contain purulent, foul-smelling material that is discharged onto the skin surface. This type of acne doesn't contain a lining of tissue. Instead, it involves multiple nodules that connect together deep below the skin's surface.
The first sign of acne conglobata is often multiple inflamed nodules filled with pus that may have a foul odour like rotten eggs. The presence of this smell is influenced by the type of bacteria on the skin, personal hygiene practices, and the severity of the acne condition. The bacteria in the acne breakouts produce sulfur compounds, which can result in a distinct and unpleasant aroma.
The more severe the acne, the more likely it is to have a strong smell. Poor hygiene can also contribute to the odour as secondary infections from bacteria are more likely to occur if the area around the acne is not kept clean. The smell of acne may indicate an infection or underlying health condition.
To treat acne conglobata, it is recommended to see a dermatologist. They may prescribe retinoids, steroids, or antibiotics to help manage the symptoms.
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Personal hygiene practices can influence the smell of pimples
Personal hygiene practices play a crucial role in influencing the smell of pimples. While acne itself is not a direct result of poor hygiene, improper hygiene practices can affect the overall scent of your skin and make pimples smell worse.
Maintaining good personal hygiene is essential for managing the scent of your skin. This includes bathing or showering daily with mild soap and warm water to wash away bacteria and keep your skin clean. Wearing clean clothes, socks, and underwear can also help you feel fresh and reduce body odour. If you sweat a lot, opt for clothing made from natural materials like cotton, which can better absorb sweat.
Inadequate hygiene can lead to the proliferation of bacteria on your skin, which can contribute to the formation of acne and its associated odour. These bacteria metabolise skin proteins and fats, producing smelly by-products. Therefore, it is important to keep the area around your acne clean to prevent secondary infections from bacteria, which can result in acne pus with a stronger odour.
Additionally, the type of bacteria present on your skin, the severity of your acne, and other factors can also influence the smell of your pimples. For example, certain bacteria can produce sulfur compounds, resulting in a pungent smell of garlic or onions when you pop a pimple.
Practising good personal hygiene and consulting with a dermatologist for proper diagnosis and treatment can help address the smell associated with pimples.
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Frequently asked questions
If your pimples smell like cheese, it may be due to the presence of an epidermoid cyst. These cysts can contain a foul-smelling, yellowish, cheese-like material.
An epidermoid cyst is a noncancerous bump under your skin. It is a slow-growing lump that appears due to a blockage of the hair follicle.
Epidermoid cysts develop when dead skin cells accumulate deep in the skin and don't slough off as they should. An injury or irritant may also cause these cysts to form.
The most effective treatment for epidermoid cysts usually involves the complete surgical excision of the cyst while keeping the cyst wall intact.
The presence of bacteria, the intensity of your acne breakout, and your personal hygiene practices all collectively contribute to the distinctive scent of pimples.

























