How to Check If Your Bathroom Exhaust Fan Is Actually Working
https://thecleancorner.northvaledigest.com/posts/how-to-check-if-your-bathroom-exhaust-fan-is-actually-working
Hold a piece of toilet paper up to the fan grille while it's running. If the paper sticks, you're good. If it flutters or falls, the fan's not pulling air. Also listen for a quiet hum instead of a grinding noise—a loud fan might be struggling, not working.