Right AirPod buzzing even when not connected

Alright, so I have seen a few posts about one AirPod making a buzzing noise when connected to a device. However, I did a little fiddling around with my Bluetooth and discovered that even when my AirPods are not connected to my phone or any device, the right one is making a buzzing noise. When I do connect them to my phone, I can only hear audio out of the left one. The last time they were working was a few hours ago, and I haven’t dropped them or done any damage to them. Is there any way I can fix these, or will I have to replace them?