I see. Yeah. I have 1 degree of separation from a whole family that died from cancer they got from radon. Long story short they had a newer home with a basement and the home was too "tight" for energy efficiency. Radon couldn't get out.
Discussion
Yes. New, tight homes are horrible but not just with radon (which will kill you, no doubt). Probably the worst air quality you will find short of high summer in L.A. (smog) are in these houses and new construction buildings.
Fresh air isn’t appreciated.