Actually guys ..the smoke can remain at a constant if you wish ..
A small fan can blow the smoke of theres a Y of the main motor to command an esc for the smoker..
Now that works well ,,but in reverse the fan motor will reverse also ,(if the smoker fan esc has reverse).
To have the fan to run in its proper direction under a reverse or forward command..
1 -connect the two ESC output leads +/- to the input of a bridge rectifier
2 -connect the outputs of the bridge rectifier to the fan motor..
you may have to reverse them or whatever to get the fan spinning the right way..but when your done..forward/reverse the fan motor will always spin in the correct direction to blow out your smoke..
Most hairdryers have everything a guy needs to make smoke,and theres a bridge rectifier,more often than not a DC fan motor in them, so all you need extra is something to hold the smoker fluid and a wick..
fiber glass cloth teased all to heck with a wire brush willl provide you with the wick..