Do not mix this up with regular sweat from exercising. Ammonia
odors from the breath or body sweat
are called uremia. Nitrogen containing waste products, often from failing or damaged kidneys are suspected. Kidney tests are recommended to rule this out. Other metabolic waste products such as glycosylated wastes (protein wastes) and byproducts of abnormal cell oxidation may also be the cause of the ammonia odor. If the problem is from kidneys, dialysis is usually ordered.