6+ months I’ve been running mine, very pleased.
There can be a slight smoke odor left in the room at times, and if you have fabrics the smoke will sort of cling to them.
It does a great of quickly clearing the smoke though. I don’t think a ventilation fan will do any better as far as CFM, and you’re venting out heat. Unless your ventilation fan takes up a good portion of one wall of your room, like a wind tunnel.