Hello doctor.. when my son was 2years old he use to mimic his uncle.. he use to take everything his uncle uses and mimic like him.. somedays he even played with his uncle's perfumes and deodorants.. now my son is 4 and half year old.. he started to have armpit smell like elders.. he doesn't have other puberty issue.. but is this normal to have armpit smell for a 4year kid and how to avoid it? pls reply