Why does my left airpod make more and clearer noise than my right?

to explain the problem, i often wear my airpods separately to make sure i can still hear some of the traffic close to me. the last week i noticed that my right airpod makes less noise and alot less clearer noise than my left. the weird part is also that if i hold the right airpod slightly out of my ear i hear the noise louder than if i put it in my ear. does anybody recognizes this and how to fix the problem?