A friend went to a presentation about covid. There they said that lead in the air ( eg. Car heavy cities) had a direct consequences on covid particles that get

A friend went to a presentation about covid. There they said that lead in the air ( eg. Car heavy cities) had a direct consequences on covid particles that get more and deeper into your body. So cases there would be more severe. ( It's 6 months ago that i heared it and didn't hear any research about it. It does make sense when India has it worse)