The fire extinguisher is not just for show
now if they are disoriented, do not understand what is happening, or in other way can't make their own decisions, then we can get a supervisor and law enforcement involved to take them against their will.
Although, I can't wait for the day when I have a patient having a stemi, who won't consent to go to the hospital, and I can sit on the couch next to him, grab the remote and say "what are we watching? I'm going to wait here until your heart stops or you stop breathing, and then take you to the ER. i'm an hourly employee, so I'm in no rush. do you like comedy center?"