It smells like lightning because lightning produces ozone. That’s the smell in the air during a thunderstorm.I have. I have a friend who swears by it. I'm torn.
I think it can help in ground blinds. I don't think there is a chance in hell it works in a tree stand. They have that screw in mount system for a tree, but again, no way it does enough to cover your scent in that situation.
The ozone does put off a weird smell. They say it smells like lightning. No 17ing clue what that means, but to me, it smells like a small electrical motor about to go bad. There's a slightly burned plasticy smell to it. My understanding is it can be toxic at a certain level. It does give me a headache if I run it in a blind on high.
It also makes a little white noise too. I found that to be the most annoying part. It will put me to sleep in a dark blind.
In summation, if you hunt a lot from ground blinds and are the type that is very scent-conscious and only open 2 windows in your blind, it could work for you.
What if the wind is in your face and they are behind you?Never used one, but like most things hunting, I believe it's mostly marketing. Many tests have been done on the noses of dogs, deer, etc. If the wind is at your back, they're going to smell you not matter what. If the wind is in your face, they won't smell you. This may have limited impact in situations of no breeze. I wouldn't waste money on it. Cover scents, etc., have been proven not t work.