👉 Athletes' body odors, often referred to as "athletes' fumes," are primarily caused by the accumulation of sweat and various metabolic byproducts during intense physical activity. Sweat contains a mix of water, salts, and organic compounds like lactic acid, urea, and ammonia, which can give off a distinct, sometimes unpleasant odor. Additionally, the breakdown of these substances by bacteria on the skin can produce volatile compounds that contribute to the characteristic smell. Factors such as diet, hydration levels, and individual physiology also play a role in the intensity and nature of these odors. While often seen as a minor inconvenience, athletes sometimes use deodorants, antiperspirants, or specialized products to manage and reduce the impact of these fumes on their performance and public image.