Smoking cigarettes offers some level of protection against covid19.

Observational source me.

Covid swept through my workplace. Every person that got it wore their mask kept their distance and was a non smoker.

We have a smoke area outside where many smokers take breaks, and wear no mask while near each other. Not one smoker at my work has caught covid19.

Totally non scientific observation, however I'm starting to believe that smoking offers some level of protection against this virus.