[Superman]

There are many stories of a wide variety of long term ailments, not just respiratory, after Covid infections. And many of them occurred after asymptomatic infection or infection with otherwise minor symptoms.

And yeah, I think the Covid thing puts natural selection into play. Many people are just so very tough and brave that they refuse to take, or support, any steps toward public (or personal) health. These same people might also approach a downed power line which is sparking in the grass. So brave and fearless are they.