Wow Kirsten I thought you meant little tiny hardly visible mushrooms. And the rotted out wood...those conditions are a lot worse that what I thought you were describing. If anything like that ever surfaced in a house out here everyone would be evicted at the landlord's expense of course, and the building would be condemned until it was properly fixed and inspected by the city council.
I'm sure your health will improve after all this stuff is removed and replaced. Hopefully the fur babies will continue to be good and everything will be over with as quickly as possible.