Even if you're well past puberty, your body odor can keep changing and surprising you all throughout adulthood. It's just one of those great benefits of growing up. In fact, the way your body odor changes as you get older can get a bit surprising and strange. That signature scent just continues to evolve over time for most people, it seems. To be clear, though, some amount of body odor is totally normal and expected. Also known as bromhidrosis, body odor is a totally natural part of being a human, as noted in Very Well Health. Although a person's lifestyle habits and medical history can affect this scent, part of it is just determined by genetics, as further explained in Very Well Health. People aren't meant to be totally scent-free all the time, and some amount of body odor isn't even within your control.