Employment is an exchange. A commercial transaction. You don't sign away your personal liberties at the door when you contract for employment. Establishing an equivalency of smoking to vaping in any environment is a dangerous precedent. The more we capitulate to such unilateral restriction the more that stigmatization and required abstinence become the norm. What were the terms and rules of employment to begin with? As for the suddenly some clouds are objectionable — When is a cloud too big? Such a criteria in the workplace sounds like the convenient excuse for dismissal by someone too shallow or two-faced to admit their agenda. Who wants to work in a place where you're second-guessing the staff's impression of your vape trail? What an invitation to the co-worker with a grudge or an attitude. Back to being low class smokers at the mercy of our less tolerant peers. The lowest common denominator. Keep the resume handy. The workplace is where we spend a significant part of our lives. It's a sacred place for the individual to pursue survival and build social acceptance. Conditions that arbitrarily limit this compromise both. While I'd agree that prudent restraint is a good strategy for promoting good will...it is anti-social to compel it. Can we truly control social behavior in the workplace? Arguably not without prejudice to constrain one and not all. Good luck all.