What to do if smoke from a potbelly stove remains in a garage?

My question is: in the garage 6x6 meters at the entrance there is a “potbelly stove”, a chimney with a diameter of 140 is brought out onto the side and 1 meter above the roof. the slope of the roof is small, the difference is 0.6 meters. at the far wall, 5.6 m from the “potbelly stove”, ventilation through the roof led out about 2 meters above the chimney pipe. When firing a potbelly stove, very poor traction, what is the reason? can lengthen the chimney, otherwise almost all the smoke in the garage.

Naturally! Because of the pressure difference, it turns out that the air is sucked in through the potbelly stove, and leaves through the ventilation!

You can enlarge the pipe, you can make a damper for ventilation (but then you need to think about where to draw air into the garage of the atom with a stove). Well, check \ clean the pipe never hurts.

Heating

Ventilation

Sewerage