As far as I can tell, only age-restricted casino floors and bars are exceptions from the Nevada's indoor smoking law. Before the law, I found it odd when I was in a restaurant in Reno, and I was asked if I wanted to be in the smoking or no smoking section. I hadn't been asked that question in California for a long time. I also found it odd that Nevada even enacted a ban on smoking, given the biggest indstries are all vices.
However, pot isn't considered the same as tobacco or vaping. Question 2 made it clear that smoking pot wouldn't be legally allowed in any public place. Now illegal is another matter. I've been to plenty of places where the smell was unmistakable, but nobody seemed to care.