How to Manage Foot Odour: Causes, Myths, and Evidence-Based Treatments

Foot odour is a common—and often embarrassing—problem. But despite how widespread it is, many people don’t understand what actually causes it or how to treat it effectively. Fortunately, foot odour is almost always manageable once you know the real science behind it.

This guide covers the true causes, the most common myths, and the evidence-based treatments that actually work to keep your feet fresh.

What Really Causes Foot Odour?

1. Sweat + Bacteria = Odour

Feet naturally sweat. In fact, they have more sweat glands per square centimetre than any other part of the body. Sweat itself doesn’t smell, but when it mixes with bacteria that thrive in moist, warm environments—like your shoes—odour forms.

The main culprit is bacteria that break down sweat and dead skin cells, releasing acids that create that characteristic smell.

2. Fungal Infections

Conditions like athlete’s foot can make odour worse. Fungal infections thrive in warm, damp environments and contribute to a sharper, more persistent smell.

3. Footwear and Socks

Shoes that don’t breathe or socks made of synthetic materials trap moisture, creating an ideal breeding ground for bacteria.

4. Hormonal Changes

Teenagers often struggle with strong foot odour because hormones temporarily increase sweat production—a normal but often frustrating part of growth.

5. Hyperhidrosis (Excessive Sweating)

Some people naturally sweat more than others. When excessive sweating mixes with bacteria, even clean feet can develop persistent odour.

Common Myths About Foot Odour

Myth 1: Foot odour means poor hygiene.

Not true. Many people with excellent hygiene still struggle with odour due to sweat levels, shoe choices, or bacteria levels.

Myth 2: You can’t get rid of foot odour permanently.

False. While there’s no “quick fix,” sustained, evidence-based treatment can dramatically reduce or eliminate odour.

Myth 3: Only men get smelly feet.

Foot odour affects all genders equally. It’s influenced by sweat, bacteria, footwear, and activity—not gender.

Myth 4: Using more deodorant or strong perfume will fix it.

These products mask the smell temporarily but do nothing to address the underlying cause.

Evidence-Based Treatments That Work

1. Wash Feet Properly (Not Just in the Shower Runoff)

A quick splash in the shower isn’t enough. Use:

• Warm water

• Antibacterial soap

• A soft brush or flannel to remove dead skin

Ensure you dry thoroughly, especially between the toes.

2. Choose Breathable Footwear

Leather and mesh allow air circulation. Plastic or rubber-based shoes trap heat and moisture.

Rotate your shoes daily—allowing 24 hours between wears helps them dry fully.

3. Wear Moisture-Wicking Socks

Materials like:

• Merino wool

• Bamboo

• Technical sports fabrics

These pull moisture away from the skin and drastically reduce odour.

4. Use Antiperspirant on Your Feet

Regular underarm antiperspirants containing aluminium chloride can be applied to the feet to reduce sweating. Clinical-strength versions are often more effective.

5. Foot Powders and Antibacterial Sprays

These help:

• Reduce moisture

• Kill bacteria

• Prevent fungal infections

Look for powders with zinc oxide or sprays containing tea tree or chlorhexidine.

6. Treat Any Fungal Infection

If athlete’s foot is present, antifungal treatment is essential. Left untreated, it will continue feeding bacteria and worsening odour.

7. Try Shoe Sanitisers or UV Devices

UV light devices and antibacterial shoe sprays can help kill bacteria inside footwear where odour starts.

8. Medical Treatments for Excessive Sweating

If hyperhidrosis is the root cause, podiatrists can offer:

• Prescription-strength antiperspirants

• Iontophoresis (a water-based electrical treatment that reduces sweat)

• Botox injections for severe cases

These options are effective and well-supported by research.

When to See a Podiatrist

You should seek professional help if:

• Odour persists despite good hygiene

• You have recurrent athlete’s foot or cracked skin

• Excessive sweating interferes with daily life

• The skin is peeling, itchy, or painful

• You have diabetes and notice any changes in skin condition

A podiatrist can identify the exact cause and tailor treatment to stop the odour at its source.

Final Thoughts

Foot odour is a common issue with real, manageable causes. By understanding what’s behind the smell—and avoiding common myths—you can take simple, evidence-based steps to keep your feet fresher, healthier, and more comfortable.

If you’d like, I can also create a shorter patient-friendly handout or social media posts to accompany this blog.