Last year I commented an already known fact, With rise in air pollution, CardioVascular deceases will b on a rise.
Viruses juz look for ideal hosts &thrive when environ is ideal.
We are offering em all.
Dirty lungs, Cold weather, reduced sunlight, polluted air, poor immune etc.

How often u change Air Filters of car/homeAC/Air Purifier.
Check their condition after use.
Can we,/for tht matter
any life form replace lungs at will?
Dirt attracts bad things
We must take care
it shouldn't take a Harward study to understnd ths
CC @elonmusk
@CDCgov
@ICMRDELHI https://twitter.com/cleantechnica/status/1248961600440217600

Check this thread.