The air was very easy to breathe. The difference was extremely noticeable. We started with a biocide and we ended with a biocide. By the way, mycotoxins don't off-gass. What you are really desribing is Microbial Volatile Organic Compounds.
Mycotoxins stay int the spore, mycelium, hyphae and substrate it grew-on.
Unless dry spores become airborne, you're probably dealing with MVOCs. Chapter was written by Dr. Harriet Ammann, Toxicologist. I'm just trying to point out that biocides are necessary if selected and used properly. These products also have alcohols to keep them from hardening until necessary. I usually stay away from blanket statements.