I feel this in my soul. My university house had mould on the bathroom ceiling, and one of my roommates was allergic - they went into violent sneezing fits every time they showered.

Our landlords tried everything to avoid addressing it, up to claiming that, "people couldn't be allergic to mould like that."

They only "fixed" it after one of my other roommates threatened to talk to his father who was a lawyer. Their "fix" was to paste over the ceiling with vinyl plates.