Steve, it shouldn't be that bad. Expect the casino and most bar-lounges to be fairly smoky, but smoking is prohibited in most indoor areas (the atrium/"street", show lounges, etc.) Smoking is allowed on deck (outside) too, but on most cruises I have taken, I have not found that to be a problem. Most cabins are also quite clean-smelling, though if you are very sensitive to smoke, you will probably notice a slight residual odor. Paradise was a great choice for you! However, I think you will find Voyager to be enjoyable, just the air in a few areas not quite up to your standards.