I think this is one of the dumbest gimmicks going. No doubt that ozone machines work for what they do, but the size of the ozonics unit and being outside and all, theres literally no way it could work.
That being said, I hunt the wind when I can, but by no means hunt it religiously. I have mature deer down wind of me constantly and get only get burned once or twice a year. Bottom line is you need to keep your camo outside or in a tote full of wood chips, and try not to smell like a sweaty greek guy that owns the diner on 22.