My late-2021 M1 Pro is working fine but I think one of the fans is broken. When loaded it starts beeping every 7 seconds and won't stop until I reboot. It might be just dust but I'm reluctant to open it up. Maybe I should and if I break it I have a better reason to upgrade lol.

You can spray compressed air without opening the Macbook. Also iFixit has a nice guide if you do open it up: https://www.ifixit.com/Troubleshooting/Mac_Laptop/MacBook+Fa...