Neither "scent" nor "olfactory" can be substituted for "smell-wise" in the sentence, "I brought in a sprig of lilac with me so it would be beautiful smell-wise, too" and make scents sense. Olifactorily would work, though a bit awkward-wise. I guess it doesn't slide off the tongue quite the way "visually" or "aurally" do.
Too bad for The Lovely Bones. Ryan Gosling has become one of my favorite actors on the basis of two movies: Half Nelson, during which I fell asleep but up until then was blown away by his performance, and Fracture, in which I liked him better than Anthony Hopkins.
I read the book The Lovely Bones years ago, and my reaction was, ehhh ...