What your character smells like: regular human. unless siffleur can smell like, Eldritch Influence™, in which case some of that as well.
What parts are edible: the usual
How graphic are you prepared for tags to be (from G to NC17): just fuck me up (up to NC17 is all good)
Do you want your character to be eaten alive, or killed first: don't you put him in your mouth, don't you stuff him in your face whichever you like, i'm all yours baby