S.T.
i'm always baffled when people post questions like this. do you really think people who have never met your child will be able to answer this?
smells are interesting. your son is a very small person learning how to navigate the world through his senses. smell is apparently an important one for him.
there's plenty of room for a sensible mother to allow her son the freedom to explore as he wishes, and still teaching him sensible boundaries if he's imposing his little nose where it's not wanted.
khairete
S.