That's something I'm not sure of...but then I actually said it was not recognisable as a weed smell...it's true - the vapour that comes out does not smell like that which you'd be used to as the smell of weed. The leftover has no smell either...I guess it's similar to vapourising some lavender oil VS setting s lavender bush on fire?
There is A smell from the weed...just not that smell...it's kind of like very light herbal tea almost. It doesn't eliminate the pre-existing smell of the plant though, proper storage does that for me.

Nope. it's habitual but not excessive.