Can’t the problem just be fixed using things like decontaminates, filters, ultraviolet lights, and air purifiers?
No. The source must be identified and eliminated before a building can return to “normal”. Attempts to destroy the fungal colonies with so-called decontaminates usually produce hardier strains of the fungi that are resistant to the chemical previously used on them. Most filters cannot trap the tiny and light-weight microbial spores circulating in a building. Ultraviolet light can kill some microbial spores, but it is very difficult to get enough light on them for a long enough time to destroy them. Ion generators, ozone generators, ozonators, and similar products cannot eliminate the sources of indoor air contaminants. The cause would need to be fixed or repaired (as in a leaky roof).
