It's been joked about on here recently, but this article from POLITICO says Don't Laugh! RJR has used tobacco plants to make vaccines before and are now attempting to make one for Coronavirus. Not exactly a smokable cure, but interesting science nonetheless!
Could tobacco cure coronavirus? Don’t laugh.
The Pentagon's medical research arm credited the use of tobacco plants in 2012 for the quick development of 10 million doses of flu vaccine.
www.politico.com