I found it as comfortable as wearing a noose around my throat. I prefer to keep my distance. And when running it means I make it a lot more than 6ft / 2 meters.
There is a strong correlation between deaths/infections and air quality. Not only for Covid-19 btw. We need to clean up our air around the world.
US research showed the correlation between air quality and deaths. In China most people died in areas with a lot of factories and in Europe most people died or got sick around intensive farming.
I hope this is a wake-up call for everybody how important clean air is. If we can get a wi-fi signal in the smallest towns we should be able to have clean air.