Well, I’ll be! And everyone said cigarettes are bad for you...
I’m gonna fire up a Marlboro and help fight off the virus. ;)
Very unlikely it would do you any good. You need to do this for a while..... months, maybe years: basically build up immune system to fight constant low-level inflammation in the respiratory system.
I'd suspect that nicotine has nothing to do with this... nicotine-free sigs would work just as well.
Any benefit probably declines with smoking related lung maladies.