The director of Mongkutwattana Hospital in Bangkok has vowed to lock defiant smokers on his premises in “gas chambers” until they inhale 100% of their cigarette smoke.
Read what he's describing. He's basically saying "fuck smokers, they get what they get". "Fuck smokers" is fine, but if you're deliberately trying to trap them in a tiny, contained room that you're not circulating air through, they will be deprived of oxygen.
You'll have a hard time convincing me that his plan is to kill anyone who smokes in his hospital.
Not only does it go against the whole point of a hospital, it's probably very illegal for him to kill anyone that way, and I wouldn't be surprised if some of his top staff are smokers. Not to mention that there'd have to be multiple people in on it during the installation and usage.
No, that's not usually how it works. It's never how it works. This isn't satire. It's an actual proposal.
People advocating for unhinged bullshit do so because and only because they believe in it. There is no alternate interpretation of "lock people in a closed space with their smoke to punish them". If there was sufficient airflow the smoke would be gone in seconds.