Here's Airpods support articles mentioning water:
How to clean your AirPods, AirPods Pro, AirPods Max, and EarPods - How to clean your AirPods - Apple Support --> section on "Learn about AirPods and water resistance"
In the above document Apple says, "If your AirPods become damaged after they get wet, you can chat or talk with us to order a replacement." Click here --> https://getsupport.apple.com/?caller=kbase&PGF=PGF32003&category_id=SC0285
About the sweat and water resistance of AirPods Pro and AirPods (3rd generation)
About the sweat and water resistance of AirPods Pro, AirPods 3, and AirPods 4 (both models) - Apple Support
To me it seems that Apple is saying if it still works then great, no problem. If there is a problem, call them.