Personally I do not hunt with one. I have a Thermacell and often I can smell a bit of something. Maybe it is just me being paranoid and inducing a placebo like reaction, however, I look at it as another item that increases the potential for being detected. Not only have I watched friends’ videos, but personally seen, mature bucks far down wind of another hunter change its path, even though I know that hunter is quite scent cautious (not tied to Thermacells).
Likely I am just OCD on scent control, however, ever since I really took it hardcore serious, I have so many deer (including mature bucks from unsuspected locations) come right up on me and never know. I hunt a lot, and getting winded a time or two in a season will cause me to really consider my routine, not to mention all but abandon the set I was winded in. I am just always thinking “whats my potential for scent contamination, whats my routine, wheres my entry route, wheres my wind, and are there mature bucks acting different due to any disturbance I may have created now or before.”
Just my honest opinion from a scent control stand point, nothing more. Good Luck