I love the smoke !
I prefer MTH SMOKE UNITS over the Lionel ones.
The fan driven smoke units put out smoke !
I have many different smoke fluids with the diferent scents .
I even own a smoking tank car by MTH. It is a Christmas one !
I do own a Lionel RS-3 Christmas engine that is fan driven as well !
I turn the units off if someone with health issues comes over.
I planned ahead to have vents in the glass block windows. Three total !