Okay, there is at least one study in PubMed central. Looks like nicotine can prevent the cytokine storm.

https://pmc.ncbi.nlm.nih.gov/articles/PMC7836994/

And see, an article: https://pmc.ncbi.nlm.nih.gov/articles/PMC7192087/

Yes, looks like smokers didn't get covid as much or dealt with it easily, and yes, there are studies as to why that might be, and yes, nicotine patches presumably work.

And then there is this study about niacin, in the form of nicotinic acid, concerning its potential inflammatory effect and potential use for treating or preventing heart disease: https://pmc.ncbi.nlm.nih.gov/articles/PMC3805984/

Which of course makes me wonder if it would be beneficial also when trying to prevent or treat something like covid or influenza. At least you can still buy B3 as nicotinic acid pills, even if it is a bit harder to find sometimes than B3 as nicotinamide.

Okay, there is at least one study in PubMed central. Looks like nicotine can prevent the cytokine storm.

https://pmc.ncbi.nlm.nih.gov/articles/PMC7836994/

And see, an article: https://pmc.ncbi.nlm.nih.gov/articles/PMC7192087/

Yes, looks like smokers didn't get covid as much or dealt with it easily, and yes, there are studies as to why that might be, and yes, nicotine patches presumably work.