Sweating helps regulate your body temperature. That's why sweating under certain conditions is natural, no matter what kind of skin you may have.
Bacteria that cover our skin cause body odour when we sweat. Underarm skin is especially prone to bacterial growth. That's why it's important for you to actively care for your underarm skin with special products for this area. Although there are many factors that can affect how much you sweat, such as the climate where you live or how nervous you are, nothing affects body odour more than whether or not you maintain basic hygiene.