I worked the bar in a veteran's club for a while and they kept smoking for years after our state banned indoor smoking. So did most of the other private clubs in the area. One by one though, they wouldn't be quick enough to hide the evidence during a surprise visit and got hit with huge fines, and they'd quit allowing it. Most of the guys that frequented these bars were members at most, or all the other ones as well, so a lot of the smokers would end up hanging out somewhere else.
The bar I worked at held on the longest. I was still pulling occasional weekend shifts or working weddings in 2018-2019 and they were still smoking in there. I've heard that they've since relented and gone non-smoking. I'm surprised they were able to hold out as long as they did, but I think being the only game in town for smokers helped them.
It was gross. I got used to it when I was in there.. But at the end of the night after I closed up and walked out, I'd sit in my car and just be overwhelmed by how bad I stunk.
I feel a little bad for smokers, but I do think it's way better now that you can't smoke indoors anymore.