It can't hurt although many claim that Ozone in an "enclosed" blind can be harmful. I try to carry around a minimal amount of "things" so I am averse to tinkering around with something else. In the 45 years I have been hunting, I can honestly say that I can only remember being "busted" a handful of times solely due to scent and I hunt A LOT.
The times I was busted I can say it was more a combination of movement, noise, and scent. I think only one of those do not immediately spook deer. For example, a deer sees your movement and it gets it's attention. Then the wind swirls and your scent is picked up. Another example would be you spot a deer and shift around in your tree stand. It's makes a squeaking noise and the deer looks in your direction and spots you movement. Busted.
Just my 2 cents.
The times I was busted I can say it was more a combination of movement, noise, and scent. I think only one of those do not immediately spook deer. For example, a deer sees your movement and it gets it's attention. Then the wind swirls and your scent is picked up. Another example would be you spot a deer and shift around in your tree stand. It's makes a squeaking noise and the deer looks in your direction and spots you movement. Busted.
Just my 2 cents.