Martha Nussbaum, a leading contemporary philosopher and legal scholar, has some great stuff on the philosophy of disgust and the law. It isn't strictly or exclusively about scent, but I think her general discussion of disgust might be useful. She is also definitely sensitive to how this all can be particularly impactful towards women.

The book is "Hiding from Humanity", and you can probably find some talks and readings online as well searching for "Martha Nussbaum on Disgust"