In a building that age that has never had a fire safety inspection, I’m guessing that your neighbours live in mortal fear of the council coming round and issuing a fire ordinance order which could cost tens of thousands of dollars in sprinkler systems and whatnot.
But it sounds like you aren’t on anyone’s radar … yet.
You could start by insisting that everyone installs a smoke alarm in every room (required by law) or you could make yourself the most hated person in the building and call the council and ask for their opinion. Maybe you could use the threat of the latter to ensure the former.
Or you could just wait for the fire.
Tough call, but sooner or later someone has to start making grown-up decisions.