The bad body smell is a result of bacterial action on certain substances in the sweat secreted by a kind of gland in the armpits. For people who sweat a lot, there will be more bacteria in the armpits and the smell will be stronger, causing embarrassment. The basic principle of treatment is to keep the armpits clean and dry. For severe cases, the sweat glands can be removed by surgical method, or the sympathetic nerve innervating the glands can be cut by endoscopic surgery to stop sweating in the armpits.