“Maybe it’s 52 years of tobacco smoking!?”
Same here (although more like 35 years) - I can’t remember the last time I had a cold or the flu and never got symptomatic COVID. Our respiratory systems must be a toxic environment for viruses.
(Don’t take up smoking, kids, you’ll regret it)
I can’t recommend smoking but, then again, I can’t recommend the “vax” either.
Full disclosure; I have no experience with the latter. :)