The Smoke Detector Beep became a staple prank sound online because almost every home has the same chirping alarm. Clips of the low battery beep were shared on soundboards and in short videos in the 2010s, often to trick people into checking their own rooms. Its spread came from that instant confusion, with creators using it in group chats, streams and fake alarm jokes. It remains popular because the sound needs no context, everyone recognises the warning, and the reaction is immediate even when the beep is clearly coming from a phone.