hi,thanks for your query.Body odor is a perceived unpleasant smell our bodies can give off when bacteria that live on the skin break down sweat into acids - some say it is the smell of bacteria growing on the body, but it really is the result of bacteria breaking down protein into certain acids. you should see your doctor if you have a fruity smell it could be due to diabetes, liver or kidney disease often makes the individual have a bleach-like smell.treatment options are Keep the armpits clean ,Wash daily with warm water, use cotton clothes, diet high in red meat may also raise the risk of developing more rapid body odor. visit dermatologist for further treatment.