Look at what kind of barbecue grill you have, Korean barbecue grill is self-smoking, the stove itself with a small fan, you can make the charcoal re-distribution of combustion on the smoke, barbecue oil along the grill plate dripping to the stove inside the water, do not fall to the charcoal, so there is no smoke.

There is another kind is to install the smoke pipe, divided into the upper and lower exhaust smoke, are piped, with one or several large fans.

The effect of the upper smoke exhaust is shown in the picture: