For real- instead of being passive aggressive: just be honest. Go outside when they’re coming back into the building. Be safe but assertive if it’s really not something you can just ignore.

Get yourself a copy of “Stop Caretaking the Borderline or Narcissist: how to stop the drama and move on with life”

It might help you realize the ways in which you’re being humiliated as you attempt to take care of other adults who need to look after themselves. It helped me a lot.