So far i have only ever heard of that happening in America and as far as i know 75% of the cases that have had fungus spore respiratory conditions have been found to be caused by faulty refrigerators,air conn,damp and general poor hygiene,and only 12% of those houses found to contain huge growops,i.e. the whole house was used to grow,were actually caused by growing.
The american govt is putting people of growing by basically stealing your house from you if you get caught,sux huh.
If you ever see any mold in your grow room kill it immediately use a small portable dehumidifier and keep everything as clean as possible