ORIGINAL: kevin1
Skunk spray is a response to predation, you'll more likely spook the deer than fool them. All you can really do with odors is reduce them to the point that you seem farther away, and therefore less of a threat, than you really are. I wash my clothes in Sportwash and baking soda and hunt the wind. If a deer busts you with it's eyes and/or ears it's first response is to circle downwind to check you out with it's nose.
Skunk spraying is a preditory response, but unless a skunk spray is over strong (extreemly fresh), it will not normally spook a deer. If it did, the deer would be constantly spooked from skunk smell. They grow accustom to the smell of skunk, but the left over smell is enough to help cover the human smell, but not fully cover your scen.
Always play the wind, that is your best chance.