Provided it is th truth and not just a ploy for more business?
We have had tremendous fuss here about closing down schools/sending students home etc. because of mould etc. It seems, IMO to have followed all the super insulation and other energy saving techniques of the last 30 years. And to boil down to stupid things like windows that don't open, insufficient ventilation while several hundred active children and staff are inside the building for some 7 hour per day etc. Also improper understanding about vapour barriers etc. All things that can be overcome/controlled by common sense procedures. An allied concern throughout parts of NA was/is Legionnaires Disease, unclean AC systems containing and maintaining disease spores and seniors/veterans being more susceptible in later life. Cheers.