Las Vegas is being hit by the smell of cigarette smoke in its famed casinos. Whereas New York City and Los Angeles ban smoking in all enclosed public spaces, most of Vegas still allows its gamblers to puff away while they dream of winning big.For those who don’t smoke, or perhaps struggling to give up, it can be the one downside to some of the most over-the-top and spectacular hotels in the US.Related: Gay bars and clubs in Las VegasWell, that looks set to change this month with the re-opening of one of the Strip’s major resorts: this time as a fully smoke-free location.Park MGM/NoMad will be reopening on September 30.