Underarm odor, also divided into two cases: first, the smell of small sweat glands hyperhidrosis appears, this odor is colorless and odorless sweat produced by the more salty situation. Second, the sweat secreted by the sweat glands, and after the action of bacteria on the surface of the skin, there will be a pungent odor of unsaturated fatty acids, this odor is called fox, or armpit odor, or oedema. These two smells are treated separately, for small sweat glands appear odor, often a normal odor, this is mainly through excessive cleaning, pay attention to personal hygiene can. For the case of fox odor, it is often related to genetics. If the odor is relatively light, you can use topical medication can be. If the symptoms are more severe, surgery must be used to achieve complete eradication.