This BBC report is a sad indictment of Building Regulations. We build our houses to be airtight, and poison ourselves into the bargain. This is precisely the reason why our old houses can be so much more healthy to live in - less pollutants, more airflow and breathability.
BBC News report into air quality
It's so easy to see why we are developing so many problems with condensation if the managers of this housing association have to do training courses to teach people to open the windows....
So sad, but this is what Building Regulations have foisted upon us..