interesting. plausible?
Assessing nitrogen dioxide (NO2) levels as a contributing factor to coronavirus (COVID-19) fatality
Nitrogen dioxide (NO[2] ) is an ambient trace-gas result of both natural and anthropogenic processes. Long-term exposure to NO[2] may cause a wide spectrum of severe health problems such as hypertension, diabetes, heart and cardiovascular diseases and ...
www.ncbi.nlm.nih.gov