Sophia Delgado
Have you ever noticed a strange smell when cutting your nails? Well, you're not alone. It is quite common for nails to give off a pungent odour when trimmed, which is often attributed to the presence of stinky sulfur compounds within the nail's keratin proteins. Additionally, the edges of our nails tend to trap dirt, bacteria, and other residual smells, which can lead to an unpleasant odour when released by cutting. In some cases, a persistent foul smell, along with other symptoms, could indicate a fungal infection or an underlying medical condition requiring treatment.
| Characteristics | Values |
|---|---|
| Odor | Pungent, cheesy, or foul |
| Odor cause | Stinky sulfur compounds in keratin proteins, bacteria, dirt, grime, or nail fungus |
| Odor prevention | Using a nailbrush in the shower, cleaning nail clippers with isopropyl alcohol, keeping fingernails away from the nose |
| Odor treatment | Over-the-counter nail antifungal treatments, antifungal nail lacquer, anti-fungal cream |
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What You'll Learn
The role of keratin proteins and stinky sulfur compounds
Fingernails and toenails are made of a protein called keratin. Keratin is an odourless substance, but it contains stinky sulfur compounds that are released when nails are cut. These sulfur compounds are responsible for the pungent odour that sometimes occurs after trimming one's nails. While the smell is usually mild and dissipates quickly, it can be more noticeable when nails are soft, such as after a shower.
The sulfur compounds in keratin are naturally occurring and are not cause for concern. However, if the smell is accompanied by other symptoms, it could indicate an underlying issue. For example, a persistent foul odour on the nails that does not go away with washing could be a sign of onychomycosis, or nail fungus. Nail fungus can cause a cheesy or foot-like odour and is typically accompanied by other nail changes, such as discolouration, thickening, and brittleness.
Fungal nail infections can occur when fungi enter the body through the nails, especially if the cuticles have been trimmed or cut. These infections can be treated with over-the-counter or prescription antifungal medications, such as nail lacquers or creams. However, it is important to consult a doctor or podiatrist for an accurate diagnosis and targeted treatment plan.
In addition to fungal infections, bacterial infections can also occur around the nails and cuticles. Bacterial infections may present with symptoms such as pus and blood. Both fungal and bacterial infections can be prevented by practising proper nail hygiene, such as using separate nail clippers for the hands and feet, cleaning clippers with isopropyl alcohol, and moisturising the nails after trimming.
While the smell of freshly cut nails is typically harmless, it is important to be mindful of any persistent or unusual odours that could indicate an underlying health issue. If the smell is accompanied by other symptoms or does not go away, it is recommended to consult a doctor or healthcare professional for advice and guidance.
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Bacteria and fungi
Fingernails and toenails can trap dirt, grime, bacteria, and fungi underneath them, which can cause an odour when the nail is cut. This is because the gas from the bacteria feeding on the gunk is trapped in a semi-airtight space between the nail and the skin. When the seal is broken by cutting the nail, the gas is released. This can be prevented by cleaning under the nails with a nailbrush in the shower or using the fold-out pick under the handle of most nail clippers to scrape the dirt out from under the nail.
Fungal infections of the nails can also cause a bad smell. The fungi cause discoloured, thick, and brittle nails, and the smell comes from the soft, sticky mash underneath the nail. This fungal infection can be treated with over-the-counter nail antifungal treatments or prescription medications.
Bacterial infections of the nails can also cause an odour. These infections usually leak pus and sometimes blood. Bacterial infections of the nails can occur when the cuticles are cut or pushed back, as this makes it easier for bacteria to enter the body.
While it is normal for nails to have a slight odour when cut, if the smell is persistent and does not go away with washing, it could indicate a fungal or bacterial infection. In this case, it is recommended to consult a doctor or podiatrist for advice and treatment.
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How to prevent nail fungus
The distinct smell that emanates from freshly cut nails is caused by stinky sulfur compounds that exist inside the keratin proteins of the nails. This smell is usually normal and harmless. However, in some cases, it could indicate an underlying issue such as a fungal infection. Onychomycosis, or nail fungus, can cause nails to emit a persistent cheesy or foul odour, accompanied by changes in nail colour and texture. If you suspect a nail fungus, it is advisable to consult a doctor for proper diagnosis and treatment.
Nail fungus is a common condition that can be challenging to treat. Here are some detailed and instructive tips to help prevent nail fungus:
Keep Nails Clean and Dry: Fungi thrive in warm, damp environments. Therefore, maintaining good nail hygiene is essential. Wash your hands and feet regularly with soap and water, ensuring you scrub underneath your nails as well. Dry your hands and feet thoroughly after washing, paying extra attention to the areas between your toes.
Trim Nails Regularly: Keeping your nails short helps prevent fungi and other germs from collecting under your nails. Trim your nails straight across, ensuring they are shorter than the end of your toes. Be careful not to cut them too short, as this can lead to ingrown nails.
Disinfect Nail Tools: Nail-grooming tools can harbour fungi and other pathogens. Always disinfect your nail clippers, files, and scissors after each use. Remove nail clippings and other debris, then wash the tools with soap and warm water. Disinfect with a bleach and water solution or 70% rubbing alcohol.
Choose Breathable Footwear: Opt for shoes made of breathable materials such as leather, canvas, or mesh. These materials allow for airflow and help prevent excessive sweating. Avoid tight-fitting shoes that can make your feet hot and sweaty, creating an ideal environment for fungi.
Wear Clean, Moisture-Wicking Socks: Fungi thrive in damp, sweaty environments. Choose socks made of synthetic fibres with moisture-wicking properties to help keep your feet dry. Change your socks daily and always put on a fresh pair. If your socks get sweaty, change them promptly to prevent prolonged dampness.
Use Antifungal Products: Apply antifungal powders, creams, or sprays to your feet and inside your shoes, especially before wearing closed footwear for extended periods. These products help inhibit the growth of fungi, reducing the risk of nail fungus.
Practice Good Hygiene in Shared Spaces: Fungi can easily spread in public spaces like locker rooms, gyms, and shared showers. Always wear shower shoes, flip-flops, or sandals in these areas to protect your feet from coming into direct contact with fungi on the floors.
Avoid Sharing Personal Items: Nail fungus is contagious and can spread through shared nail-grooming tools, towels, shoes, and socks. Never share these items with others, and ensure you disinfect your tools after each use.
Maintain Overall Foot Health: Keep your feet healthy by avoiding nail biting, picking at hangnails, and injuring your nail beds or surrounding skin. These practices can create openings for fungal entry. Additionally, regularly inspect your feet and nails for any changes, and seek medical advice if you notice any abnormalities.
By following these preventive measures, you can significantly reduce your risk of developing nail fungus and maintain healthy and fungus-free nails.
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The impact of trimming cuticles
The act of trimming one's nails can sometimes result in a noticeable, pungent odour. This is due to the presence of stinky sulfur compounds within the keratin proteins of the nails. Additionally, the gas emitted by bacteria feeding on dirt and grime trapped under the nails can also contribute to the smell. While this smell is usually harmless, persistent odours may indicate nail fungus or other underlying medical conditions.
Now, when it comes to the impact of trimming cuticles, it is generally advised against by organisations like the Mayo Clinic and the American Academy of Dermatology (AAD). This is because the cuticle, a layer of clear skin along the bottom edge of the nail bed, serves as a protective barrier against bacteria for the nail matrix, the part of the nail that grows. Trimming the cuticles can leave the nail matrix vulnerable to bacterial infections, which can subsequently affect nail growth and cause aesthetic issues such as ridges, white spots, or lines.
Cutting the cuticles can also have adverse effects on the cuticles themselves. Cuticles that have been cut are more prone to dryness, cracking, and peeling, which can lead to discomfort and an unsightly appearance. While some individuals worry that avoiding cuticle trimming may result in excessive cuticle growth, experts refute this claim, asserting that cutting the cuticles does not influence their growth rate.
Instead of cutting the cuticles, it is recommended to gently push them back along the nail bed using a cuticle pusher after softening them by soaking in warm water or taking a bath or shower. Any excess skin or hangnails can then be carefully trimmed, taking care not to cut off the entire cuticle. Regular moisturisation of the cuticles is also crucial to prevent dryness and maintain their health.
In summary, trimming cuticles can have negative consequences, such as increasing the risk of bacterial infections in the nail matrix and causing cuticle dryness and damage. Therefore, it is generally recommended to avoid cutting the cuticles and instead focus on gentle pushing and moisturisation to maintain their health and protect the nail bed.
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The ideal tools for nail cutting
It's normal for fingernails to smell when you cut them. The edges of your nails are like dirt traps, and the gas from the bacteria feeding on the gunk is trapped in a semi-airtight space between your skin and your nail. This can be prevented by using a nail brush in the shower or a fold-out pick under the handle of most nail clippers to scrape out the dirt.
Now, when it comes to the ideal tools for nail cutting, here are some options:
Nail Clippers
Nail clippers are the most common tool for cutting nails. When choosing a nail clipper, it is recommended to opt for one with stainless steel or titanium blades, as suggested by board-certified dermatologist Dr Dana Stern. Both materials are hypoallergenic, easy to clean, and rust-resistant. The Seki Edge clippers are recommended by podiatrist Dr Emily Splichal. For babies or thick toenails, you may need a different type of clipper.
EDJY Single Blade Fingernail Cutter
The EDJY Single Blade Fingernail Cutter is a doctor-backed design developed with a dermatologist and biomedical engineer. It features a precision single blade that provides effortless cutting and a built-in collection system for easy cleanup. The blade is crafted from martensitic stainless steel, which is sealed with a ceramic process for superior rust resistance. It is also shaped to match the natural curves of your nails for cleaner, healthier cuts.
Nail Files
Nail files are used to smooth and shape the nails after cutting. The Tweezerman nail files are a popular option that works on both natural and acrylic nails. Stainless steel nail files are harsher than emery boards and should be used with caution to prevent nail chipping or flaking.
Cuticle Pushers and Scrapers
Cuticle pushers are used to gently push back cuticles, preventing the growth of bacteria and germs. They come in a variety of shapes, including V-shaped and triangle-shaped, which can also help remove hangnails and peeling skin. Cuticle pushers with slanted or sharper ends can effectively push down cuticles at the corners of the nails and remove dirt.
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Frequently asked questions
The smell is caused by stinky sulfur compounds that exist inside the keratin proteins of the nails. The edges of nails act as dirt traps, and when nails are long, residual smells and materials can get stuck underneath, causing an odour.
There's not much you can do to prevent the smell, but it should go away quickly. Keeping your nails away from your nose will also help you avoid the smell.
If the smell doesn't go away after washing your hands and nails, or if it persists in other areas of the body, you may have a fungal infection. Other signs of a fungal infection include discolouration of the nail, redness, swelling, and pus drainage.
