[Polynikes]

Run a search for nicotine + COVID-19. A whole slew of studies come up regarding the efficacy of nicotine.

For example

https://clinicaltrials.gov/ct2/show/NCT04583410

https://pubmed.ncbi.nlm.nih.gov/32790936/

https://www.cebm.net/covid-19/nicotine-replacement-therapy/

It revolves around the binding and displacement of the spike from the Ace2 receptors by nicotine.

They don't necessarily encourage smoking but I have seen anecdotal evidence that the use of nicotine gum in small amounts helps with smell/taste problems. YMMV

[grey_whiskers]

Thanks for posting; no time right this minute though.