It's a hypothetical question, but it's widely reported that air pollution (which is a major cause of death) decreased a lot in affected areas. Somewhat related to the Trolley Problem. https://en.wikipedia.org/wiki/Trolley_problem
It's an interesting thought expirement. I am no expert, but i believe the economic downturn could be a chance to drastically shift our economy to a more sustainable direction, if, and thats a big if, investments by goverments are directed thoughtfully.
But yes I think the crisis could have lasting positive effects, that will be very hard to measure.
But yes I think the crisis could have lasting positive effects, that will be very hard to measure.