If they're smelling the camp fire smoke on you, then you're UP wind from them. As long as you stay DOWN wind from them, you'll be fine.
I've bowhunted critters for almost 30 years now and have never worried about campfires. In fact, some areas I hunt have been burnt in recent years and animals are used to the smell.
The only time I worry about campfires is if I set up my camp exactly where I'm hunting (backpacking in wilderness). Not for the smell per se, just the added attention a fire can bring to you from a wise ol' muley.
If your hunting is a away from your camp.....build a campfire at night and enjoy the peaceful therapy it can provide. Good luck and have fun.
BOHNTR )))---------->