I am not a doctor. Nor do I play one on the internet. This research is not new, nor is it a secret.
One other thing I’ve learned about Catholics after living and working with them, is that nobody can tell them anything.
Emphysema is a slow, horrible way to die. My kids, watching their grandfather slowly suffocate to death, vowed to never smoke.
If you want to count on its running in families as protection against it, by all means, nobody is stopping you.
Delude yourself.