
Cutting your nails can sometimes cause an unpleasant smell, which may be due to bacteria, dirt, and grime that has accumulated under your nails. This can be prevented by cleaning your nails and the surrounding area regularly and thoroughly, especially if you engage in activities like running marathons or frequenting the gym, which can damage your nails and make them more susceptible to infection. In some cases, the smell may be indicative of a fungal infection, which can be treated with over-the-counter medications or, in more severe cases, with prescription medications.
| Characteristics | Values |
|---|---|
| Cause of smell | Bacteria, dirt, grime, and other substances get stuck under the nail and ferment |
| Fungal infection | Possible cause, indicated by white to yellowish discoloration, crumbly chalky texture, and creamy-yellow or greenish-black discoloration under the nail |
| Treatment for fungal infection | Persistence, patience, and perseverance; anti-fungal agents for socks and shoes; lab test (mycology test) for accurate diagnosis |
| Prevention | Wash feet thoroughly, especially between toes; use a nail brush in the shower; scrape under nails with a nail clipper's fold-out pick |
| Soaking solution | Equal parts white vinegar, Listerine, and warm water |
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What You'll Learn

Poor hygiene
Poor nail hygiene can lead to various nail infections, including fungal infections. Nails are susceptible to fungal infections because they provide a warm and moist environment for fungi to thrive. This is especially true for toenails, as they are often confined to tight, dark, and sweaty shoes, providing the perfect environment for fungal growth.
Fungal nail infections can cause an offensive smell, and the fungi can be difficult to eradicate completely. The fungi can remain in shoes and socks, creating a reservoir for re-infection. Therefore, it is essential to maintain good nail hygiene to prevent and manage fungal nail infections effectively.
Good nail hygiene practices include keeping nails short and clean. This is because long nails can accumulate more dirt and bacteria, increasing the risk of infection. It is also important to scrub the underside of the nails with soap and water or a nail brush every time you wash your hands. Additionally, cleaning and disinfecting nail grooming tools before use is crucial to prevent the spread of germs and infections.
Maintaining overall hand and foot hygiene is also essential. This includes washing hands regularly and ensuring feet are clean and dry, especially after physical activities or when wearing shoes for extended periods. Keeping nails short and well-maintained can help prevent the buildup of dirt and bacteria, reducing the risk of infections and associated odors.
Furthermore, addressing any underlying nutritional deficiencies or digestive issues can also improve nail health. Brittle, weak, and peeling nails can be indicators of poor diet or digestion, and improving these aspects can lead to healthier nails that are less susceptible to infections and associated smells.
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Fungal nail infection
The smell that occurs when cutting your nails is often caused by bacteria, dirt, and grime that has accumulated under your nails. However, in some cases, it could be indicative of a fungal nail infection.
To prevent fungal nail infections, it is important to maintain good foot hygiene and avoid walking barefoot in places like communal showers and gyms, where the infection can spread from person to person. Additionally, keeping your feet dry and avoiding wearing tight or enclosed shoes for prolonged periods can help reduce the risk of infection.
If you suspect a fungal nail infection, it is recommended to consult a pharmacist or healthcare provider. They may suggest antifungal nail medicine or, in more persistent cases, prescribe antifungal tablets. It is important to follow the treatment consistently for several months to effectively eliminate the infection and prevent its recurrence.
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Bacterial growth under nails
The space under the nails provides a protected and moist environment, which is conducive to bacterial growth and proliferation. While washing hands is a crucial defence against bacteria, it is important to ensure that the nails themselves are also cleaned, as regular hand washing may not effectively reach the space under the nails. This can be achieved by using a nail brush in the shower or a fold-out pick attached to most nail clippers to scrape out any dirt or grime.
Bacterial infections under the nails often present with symptoms such as pain, swelling, and tenderness around the nail, as well as redness and warmth of the surrounding skin. Pus may also accumulate under the skin or around the nail bed. In most cases, bacterial nail infections can be successfully treated with antibiotics. However, if left untreated, paronychia can lead to more serious infections that affect the underlying bone.
Fungal infections of the nails, known as onychomycosis or tinea unguium, are another common cause of nail odour. These infections are more prevalent in toenails than fingernails and can result from repetitive injuries to the nail, such as those sustained during long-distance running. Fungal nail infections typically exhibit a white to yellowish discolouration on the nail surface, with a crumbly or chalky texture. The underside of the nail may have a creamy-yellow or greenish-black discolouration, accompanied by a foul odour.
To prevent and manage fungal nail infections, it is important to adopt an effective cleaning routine and treat footwear and socks with anti-fungal agents or replace them if possible. Lab tests, such as mycology tests, can be requested through a doctor to confirm a clinical diagnosis of fungal nail infection before initiating treatment.
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Bits of sock stuck under nails
It is not unusual for bits of sock to get stuck under your toenails. This can happen when your socks are new and still settling, or when they are old and deteriorating. In the latter case, it is time to get new socks.
If you are wearing shoes that are too small, this could be the reason why bits of sock get stuck under your toenails. Wearing ill-fitting shoes can also cause injuries to your nails, which can lead to onycholysis, or nail separation. This condition can also be caused by keeping your nails in water for too long, regularly getting manicures, or tapping your nails on a hard surface over a long period.
Onycholysis can also be caused by fungal infections. Fungi can remain in shoes and socks, creating a reservoir and source of re-infection. To prevent this, it is important to adopt an effective cleaning routine and treat socks and shoes with anti-fungal agents, or replace them if possible.
Fungal nail infections can give off a bad smell, especially if there is muck under the nail. This is usually characterised by a white to yellowish discolouration on the surface of the nail, with a crumbly, chalky texture, and a creamy-yellow or greenish-black discolouration of soft, sticky mash underneath the nail.
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Repetitive injury to the nail
Subungual haematomas are typically minor injuries, and the pain usually subsides within a few days. However, complications may arise if the injury is severe, especially if there is bone damage. In such cases, a simple draining procedure can be performed to relieve the pressure and pain. Antibiotics may be prescribed to prevent infection.
If the nail cannot be reattached, it may be replaced with a special type of material to aid in healing. In some cases, the nail may need to be removed, and the nail bed repaired. This could involve creating a small hole in the nail to allow blood and fluid to drain out, or using special glue or stitches to reattach the nail.
To prevent infection and promote healing, it is important to keep the injured area clean and apply ice to reduce swelling and throbbing. Over-the-counter pain medications such as ibuprofen or naproxen can also be taken to manage pain and swelling.
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Frequently asked questions
The smell is likely caused by bacterial growth under the nails, which is stirred up during the clipping process. This can be prevented by cleaning your feet and nails regularly and using a nail brush in the shower.
Soaking your feet in a mixture of white vinegar, listerine, and warm water can help reduce the odour and prevent excessive sweating. Maintaining good foot hygiene and cleaning your nail clippers after use can also help.
While fungal infections can cause toenail discolouration and a bad smell, this is not always the case. The smell is often due to bacteria and dirt trapped under the nails. However, if you notice discolouration, thickness, or other changes to your toenails, it is recommended to consult a doctor for a proper diagnosis.











































