Let's first try to understand Jesse. Basically, when and where breasts are covered, they become sexual symbols when exposed. Where we live, all adults, even most children, know that breasts are a kind of sexual symbol. But they don't know why that is so, and they don't know what is symbolized. For the males, those aromas are signals, and not symbols.
Human beings are complex.
So are detective stories. First of all, both animals and humans have different kinds of frames of mind, including a sexual mindset. Look at male animals, such as stallions. They have a mindset that gets excited when they find evidence, such as aromas, of a sexually receptive female. For male mammals, that evidence is a signal .