Look for an old poster named Three Sons BBQ.He installed a vent a hood in his garage. Very clean. The door will sometimes seep smoke as well, so that worked well for him.
http://smokinitforums.com/index.php?topic=1257.msg18127#msg18127
Finally decided to try using the smoker in my garage venting into a prior wood stove vent. I was surprised how much draw the chimney has! I'm smoking some burnt ends and there's no smoke in the garage
I'm pondering making a big hood vent which could also work for searing meat since our kitchen hood vent is uber lame.
#lazyQ