I don't think anybody has the right to say who should and who should not own anything based only on their lifestyle or habits (as long as it isn't dangerous to anybody else, of course.) Animals are considered property in this country. If somebody wants to smoke in the presence of their own property, it's their own business. It's their choice to risk damaging their own property if they want to.

Some people might say that we shouldn't be allowed to own snakes because it inherently involves harming a rodent. But they're ours, and it's our decision to do what we want with them.

But anyway, I haven't heard of a snake ever getting an RI from second-hand smoke. I know lots of smokers who have had snakes for years and have never had a medical issue with their animal.