The onset of body odor during puberty is associated with sexual hair development and activation of odor-producing glands.

“is that commencer it also with um the development of body odor yes you know because as a young boy who eventually hit puberty and became a young man and now I suppose I'm in middle age um 48 um I can tell you that the the locker room smelled a lot different um be before and after Middle School right right like the in other words boys start to smell stinky um right they do yes and that's usually around that same time of sexual hair development is when you start to have those glands around the hair making some of those odors that start to produce stink”