One of my brother's friends always smelled particularly disgusting as a teenager...I couldn't quite place what he smelled like at the time, because it wasn't just normal body odor, and he seemed to shower as regularly and use as much deodorant as my brother and his other friends did, and they didn't smell like that, and he didn't seem to sweat that much more to cause the extra odor. Even the excessive application of Axe didn't cover it - as Axe usually does, it actually made it worse. Unfortunately for my brain, a discussion with a mutual friend as an adult made everything so much clearer - he was ah, not cleaning himself off after he had "alone time."