[3dee]

Lately I start to wonder if the symptoms of covid-19 are worse in areas with high air polution.

India is an example but in parts of the Netherlands where we have the worst air quality in Europe, we also see this.

It's hard to tell. But having a respiratory disease in an area of bad air quality won't help you.

[satellite2]

Interesting, there could be a correlation.

At the same time early in the pandemic I remember reading that being a smoker had a moderate impact in reducing COVID symptoms severity.

[FrojoS]

I had read about potentially protective effects of nicotine [1], but seems like it was a fluke https://www.nature.com/articles/s41533-021-00223-1

[1] There is even a RCT on this, but no results yet https://clinicaltrials.gov/ct2/show/NCT04583410