Used to describe irritation or annoyance, similar to other insects regarded as pests. That incessant buzzing is as annoying as a bluebottle in the room.
Pro Tip 2/3
Not Harmful
Unlike bees or wasps, bluebottles don't sting humans, but they are known to lay eggs in decaying matter. Don't worry, bluebottles are disgusting but they won't hurt you.
Pro Tip 3/3
Attractants
They are often found near uncovered food or waste, hinting at poor hygiene if seen indoors. Keep the food covered to avoid attracting bluebottles.