Foot odor

Foot odor, also known as bromodosis, occurs when sweat on the feet creates an environment for bacteria to grow, producing odorous substances. The front part of the foot produces the most sweat, and factors like wearing closed-toe shoes or sports footwear can worsen the odor by trapping moisture and promoting bacterial growth. Socks made from synthetic materials, such as polyester and nylon, reduce ventilation and increase perspiration, contributing to odor, though some are treated with chemicals to minimize it. Wearing closed-toe shoes without socks leads to sweat accumulation and bacterial growth.

Brevibacteria are a major cause of foot odor, converting methionine into methanethiol, which has a sulfuric smell. Staphylococcus epidermidis produces isovaleric acid, another source of odor. Other bacteria, including Micrococcaceae, Corynebacterium, and Pityrosporum, also contribute to the issue.

To prevent foot odor, maintaining good hygiene by washing feet daily with antibacterial soap, using foot files or chemical treatments to remove dead skin cells, and wearing cotton or wool socks instead of synthetic materials is recommended. Medicated insoles and powders can also help reduce moisture and odor.

In some cases, medical intervention may be necessary to treat bacterial or fungal infections with topical treatments. Additionally, foot odor is linked to olfactophilia, with 45% of individuals with a foot fetish being aroused by smelly feet.