Odor of our body is the smell of microorganisms growing on your body and generally starts at puberty due to the growing hormones known as androgens. These bacteria or microorganisms reproduce swiftly in the presence of sweat. The medical term for the body smell is bromhidrosis. When you do any kind of physical activity or are out in the sun or exposed to heat, the body produces sweat. When the sweat and the bacteria meet on the skin?s surface, it produces a smell which is known as body odor . Even though sweat is odorless, it acts as a breeding ground for the bacteria, for it to multiply rapidly. Every individual has a distinct odor and depends, to a certain extent, on the diet, health, sex, genes or medication. In short, it is also referred to as B.O. Our bad body odor can be prevented by using an antiperspirant, keeping the underarms dry; changing your diet or you can even use a mixture of hydrogen peroxide and water.