Armpit sweating with smell may be caused by physiological factors, pathological factors, etc., and can be relieved by local care, medication and other ways. 1. Physiological reaction: because the armpit area is distributed with a lot of sweat gland tissue, after encountering high temperature and hot and humid conditions, the body in order to ensure that their own temperature is constant, will accelerate the secretion of sweat, armpit sweating, sweat long-term impregnation can appear odor. You can keep your underarm skin dry by washing it in time and using talcum powder and antiperspirant, which can effectively alleviate the smell of underarm sweating. 2. Pathological factors: due to the sweat secreted by the sweat glands and the bacteria on the surface of the skin, there can be a kind of unsaturated fatty acid pungent odor, which is also called armpit odor. You can follow the doctor’s instructions to use medication such as urotropin solution for relief. Or through local injection of botulinum toxin, surgical treatment and other ways to improve. When the smell of underarm sweating occurs, it is recommended to have a relevant examination in time, and use the corresponding treatment plan under the guidance of the doctor to alleviate.