Jane-
Please look at "Vent-a Kiln" company, and get one asap.
Those fumes , if not properly vented , are there for you to breath in the
room. No telling what this could mean in several years, but
why should you settle on being the human Ginny pig. You should also be
getting the floors damp-mopped daily.( Silicosis)
Wiser in Fl.-Patti