[D sort of mentally wrinkles his nose, and it's hard to say if it's from the tease of the association, or the fact he can recall the exact scent from his memory, stronger to him because his sense of smell is horrendously powerful.]

The feelings are there as they are in everyone, but Frontier vampires twist them and use them for their own purpose, putting them where they wouldn't otherwise be, in most cases. So that their prey won't resist.

Most people would feel as you did with Silco. That is what the sensation tries to conceal.