Fuming: Adding to the Risk?

It is hardly remarkable, given the fact that SARS CoV-2 (formerly Covid-19) causes pneumonia, but a wide-ranging (in terms of locations investigated) study has clearly linked deaths from the virus to the air quality found in particular locations (https://www.theguardian.com/environment/2020/apr/07/air-pollution-linked-to-far-higher-covid-19-death-rates-study-finds). The shutdown of economic activity in many parts of the world, has, of course, temporarily (?) improved air quality but establishing the link reiterates the importance of clean air to human health. It is interesting that whilst one can easily blame a virus for human suffering and death, human activity-created problems generally receive a carte blanc.