Various sources say that about seven million people per year die from atmospheric pollution. We know that a fair bit of the last year has had substantially reduced airline flights, car trips, cruise ship trips (!!), and maybe fewer runs by container & crude oil ships.
Is there likely to be enough of a reduction in pollution from all that to at least partly reduce the deaths from atmospheric pollution to counter a fair few of the deaths from COVID? The numbers are still fluid, of course, especially as time goes by.