Reply to "How safe is model train smoke?"

Regarding smoke oil mist, most of my train running is on modular layouts at public shows.  We run hard and bring the modules home to store "wet".  In my case, in a non-climate controlled garage.  I observe that since the advent of smoke oil steamers, my tinplate track does not rust.  Instead, it gets a layer of grunge that gets cleaned with a metal polish (Brasso) before the next show.