Added Ventilation
 

I have a stand up AC unit in my garage for my cars, lol it has a 6” thru wall vent, I took a simple bathroom ceiling vent fan unit, which is 4”, and bought a 4-6” adapter, Pitt a 7’ cord on it, it pills out the smoke like hell. Spray painted the whole thing white. Smoke and farts now go rite out. Bam.