upvote
Do you have a source for that? I can tell with pretty good accuracy whether my students smoke from their voices (adult language learners, we take smoke breaks together and they have no reason to conceal it), and would be very surprised if I’m just that lucky and there’s nothing a person can pick up on acoustically.
reply
20 years of heavy smoking :)

Although it does seem to affect some people more than others for sure, I guess it depends how and what you're smoking.

reply
Despite popular belief, even heavy smoking does not alter your voice in a significant way.

I guess you don't listen to Sinatra.

reply
Or John Mellencamp, who repeatedly states in interviews that he likes what smoking does to his singing voice.
reply
Depends on what you're smoking
reply
and mostly how.
reply
Source: it came to me in a dream.
reply
There's this myth (that came to you in pop culture) that you end up sounding like Tom Waits.

In reality, some phlegm aside, their voice is still the same in any way that matters.

If you knew people who didn't smoke and started (not uncommon in the 80s and 90s, quite a few people I know started smoking in university, or after the stress of a first job, some even later), and also the inverse, you can trivially hear it for yourself.

reply
My voice is exactly the same as before I started smoking heavily, and I have never had any of the associated problems that most people seem to have (lung capacity, stamina, infections, phlegm etc) - pot luck I guess, like most things
reply