Not necessarily. Foot odor is usually due to fungal infection. The shoes, socks, and insoles worn are inappropriate. For example, shoes are stuffy, socks do not absorb sweat, and insoles are of poor quality... There are many reasons for foot odor. You can go to a place that specializes in foot treatment and listen to the doctor's advice. In addition, buy shoes, socks, and insoles of slightly better quality. Wash your feet frequently and maintain personal hygiene. It is also possible that your feet themselves have athlete's foot, not athlete's foot. caused by other reasons. If you haven’t had foot odor since you were a child, but it only develops as you grow older, it may be due to your shoes.