open windows during radon test
http://business.kanerepublican.com/kanerepublican/news/read/39927116/What_are_the_Symptoms_of_Radon_Poisoning?
Radon direct exposure is the second-leading ecological reason for lung cancer fatality, after tobacco smoke (Copes 2007; EPA 2009a), as well as the leading cause of lung cancer fatality for nonsmokers (EPA 2009b).