Funny you should say that, Doc.
I still remember the day that my dad, who was a non-smoking Navy physician, arrived home from Bethesda Naval Hospital with a carton of True cigarettes.
All of the guys at work had suggested that he take up smoking in order to "relax".
They felt that True was pretty safe.
Luckily he never did.
He even tried cigars at one point, inhaled too much smoke, & threw up.
End of story.