Thanks all.
I posted the question because I did hear of such a substitution possibility a couple of years ago, and it's not a matter of $, but of scents. I prefer do do my shopping at hobby stores (or train shows!) but most of the availability of bottled smoke in the past year has been for the smelly stuff and I don't want the train room smelling like Christmas trees, chocolate chip cookies or cedar closets. I did manage to find one bottle of Anthracite coal scent and that has the room smelling like a roundhouse - and I like it - but it's not to be found in the very few stores we have here in Maine. And I don't need the Ultra Pure for lamps because I have a 20KW back-up generator for power outages. Thanks again, I'll go with the bottled stuff, for sure.
