Apparently the carbon suits work to some degree or you would not hear stories of people having deer downwind of them and acting like nothing is wrong.
On the 2nd evening of bowseason last year I had 6 deer including an 8pt that would go 125, come in about 40 yards directly downwind of me. I took my climber instead of hunting my lock on because they skirted me the day before and the only decent tree that I could get in, I could only get up 12 ft. The deer came from a different direction than they did the first day and they wound up downwind and they were on a little rise so I was basically dead even with them, straight up wind. I was nervous and I kept thinking this is going to be over any second, but it wasn't. Those deer hung out for about 20 minutes and then slowly fed by. Unfortunately, the buck didn't feed by close enough.[:'(]
I think carbon suits work great for a little while. I just think they have a limited amount of usefullness and I have some serious doubts about the "reactivating" process and I am some doubts about there usefullness after the carbon is already soaked up all it can in sweat.