Airpods pro 3 chirp/high pitch noise

For those, who experiences whistles when exercising the issue is sweat.

I was able to track down the issue today.

It started to whistle in my left ear after almost of 2 hours of cycling. It happened in a few minutes before I came home.

So, took the AirPod and checked it on the sun where I noticed a tiniest droplet of sweat sitting on the tips' grill.

Immediately I went to my microscope and checked the AirPod thoroughly.

The sweat stuck inside the openings of the grill. It is practically invisible to a naked eye.

I removed the tip, cleaned it up with isopropyl alcohol.

Then I wiped off the airpod assembly using paper tower.

The AirPod left watermarks on the paper towel.

I put the the parts together. And the whistle was gone like nothing happened.

When I was doing all of this my second AirPod remained my in my right ear and I haven't had any troubles.

I don't know why this issue has never surfaced in my old AirPods (gen1).

I assume ANC was less sensitive and tolerated sweat inside the AirTip.

My recommendation to Apple is to do some tests in the lab and address this issue through firmware update.

I think this scenario is easy to reproduce by dropping a water inside the AirPod.

After all the real issue is chirping/whistling and many people would trade off ANC for whistle-free experience. Those whistles are incredibly loud and can scare people which can lead to accidents, therefore lawsuits.

I hardly see any reasonable hardware solution there. Maybe some hydrophobic coverage on the grill but will not protect from slow buildup or water condensation since AirPods are always a little bit cooler that the body.

After all, this issue needs to be addressed because people will sweat, get under rain, have air was build up etc.