Have to ask, why?
It will smoke initially while it comes up to temp but it gets through that pretty fast.
Are you wanting to know for venting? You'll have to vent because of the heat alone. On HI it puts out a lot.
I haven't really watched it for that because mine is outside.
Let me know how much detail you need. Not sure if I can shoot a video this weekend, but I'll help if I can.