So, you stink, thanks for realizing that. The best solution is to bath daily once or twice and use a good deodorant. If you use drugs, cigarettes, alcohol or any medicine then your body will smell, so leave these things, and eat healthy. Exercise daily for excessive sweating, body odor will be decreased, and make sure to take a shower after that. Stay clean; clean your house, clothes, and inner wears. Remove body hair because it traps sweat. Wear cotton socks and shirts, it will soak your sweat. You can use talcum powders; there are numbers of them available in the market.