RE: Scent Free Bags???
Just keep the wind in your face and the elk will never smell ya!
(lol)
Seriously . . . try cutting some pine boughs and put them in with your camo's in a large trash bag used for yardwork. They aren't scented like the ones that go under the sink. The pine will defeat any "plastic" odor you may pick up. And the elk love it!
Good luck.