My wife smoked two chuck roasts and boneless beef ribs in garage yesterday...one window open and garage door open about a foot. Garage still smells heavenly today! Only problem is it doesn't last long enough.
Sorry, not much help with your issue.
Ryan
True... I would worry if someone farts right beside me and catch me with my mouth wide open...lol...Is a garage that smells of heavenly smoke a bad thing? Not in my book!