Good question. CWD is currently only known to infect the "Cervidae" (the cervids or deer) family, which includes deer and elk.
Pronghorns are in the Antilocapridae family and I have not read of anything to suggest CWD is transmissible to them as well. If in doubt, simply have the brain tissue of your game tested, although I'm not sure if the WY G&F would accept a pronghorn sample.
Being a bowhunting I've always been fanatical about scent control. Whether it's sprays, carbon clothing etc. I've tried it. The best thing that I have found for eliminating human scent is Betadine. It's been used in hospitals and homes for decades as a defense against infections on minor scrapes and burns. It can typically be found near the pharmacy in any of the major "one stop shop" stores, and a bottle will last multiple hunting seasons.
Before every hunt possible I...