Oh the horror!!!

[doctorwayne]

.....Ummm...Should I be a little worried about that last suggestion?

Nah, I was planning to use the cut-off bits from my LPBs for a gondola-load of slaughterhouse offal, but I'd have to use a piece of styrofoam to make it look like a full, ready-to-slosh-over-the-sides load of such stuff.  Besides that, I'd have to build a half-zillion-or-so HO flies to make it look prototypical. 

There was, some years ago, a company known as Olfactory Airs, which offered various scents for layouts, such as coal smoke, creosote, and perhaps loaded stock cars, too.

Wayne