I run a Lionel Hogwarts Express under the Christmas tree.., plus my fleet of engines on my basement layout . Tried using the all the regular brands with different aromas. They all work good[ temporally (smell amd smoke) but afterwards there is a lingering stink that fills the room. My research lists Ethleyne Glycol or white mineral oil as common bases for what is being sold. plus the scent adds.
I was wondering if Fog Works Extreme High Density water based, oderless Fog Machine fluid would work ? a) without damaging the liquid smoke unit in the engine b) would make the desired temporary smoke effect c) leave no lasting odor in the room afterwards? d) reasonable price?
We go to professional indoor plays monthly where alot of this stuff is used onstage in high volume output without affecting you eyes or nasal passages. My son also uses this stuff for Halloween displays in his front yard with professional fogging machines and can literally flood the grass and the street with great effect.
The market is ripe for this type of product I think..