I can't speak from experience, but CO Outdoors magazine just had an article on just that. Last year in CO there were major forest fires from June thru Aug. The forest service reported deer (and elk and moose) flocking to those areas just days after the rains extinguished the fires. "The fall hunting season was phenomenal, with archers enjoying 50 percent success rate, twice the usual, and Woodward expects 2014 to be similar or better." (Colorado Outdoors, July/Aug 2014 issue).
I'm a rookie in this business, so it's all coming from other sources. Check out the article if you can. It's a pretty good read on teh effects of forest fires all around. Colorado Outdoors July/Aug 2014 issue.