Honestly what gets me is how one person's bad wiring can mess with everyone else's stuff in these older buildings. I had a neighbor's DIY job make our hall lights flicker for weeks, and the building manager kept blaming the power company. It's like living inside a giant extension cord where you never know which plug is gonna short out next. That's the real stress, not just the alarms but your whole place feeling like a house of cards.
Remember when my upstairs neighbor tried to fix his own toilet and flooded his bathroom. Took two days for the water to seep through my kitchen ceiling. The plumber found a rubber glove and a bunch of zip ties jammed in the pipes. Whole building felt like a shaky Jenga tower after that.