We don't and we won't. We're extraordinarily happy to not be smoking, and we were both long-term, extremely heavy smokers, but if we had never been smokers, if given the choice in a home or social environment, we'd choose plain old normal...air.
As much as we also now enjoy vaping, if given an -easier- "choice", we wouldn't be vaping or spending money on vaping. We enjoy it, we love it, but in the same way we enjoyed cigarettes, even when it looked like we're were essentially trying to kill ourselves or run more slowly or trying to get a worse nights rest or waste money.
This goes with or without the fact that nobody really knows the long-term effects - teeth, mouth, lungs, throat, nose, anything.
Pets? They don't know the effects either, they don't get the choice to be around it or not and most of them never live long enough to be old enough to buy a pack of cigarettes or a PV and make their own bad decisions.
Step ten feet outside. If they don't need something or you aren't sure about something -- keep it away from them. Food, toys, vaping, the neighbor's cat with questionable intentions, anything.
We should all do the same, but we're highly intelligent creatures with the ability to make poor decisions, justify anything, and rack up credit card bills based on those poor decisions.
Justification is what kept us all smoking so long. Addiction is just the little demon on the should. Always only justify decisions that only impact yourself. Just our opinion...