Mine play a high pitched prolongated shrill ping at the highest volume it can. It happened 3 times before I threw them away and went back to hard wired headphon

Mine play a high pitched prolongated shrill ping at the highest volume it can. It happened 3 times before I threw them away and went back to hard wired headphones. It hurt. The first time I reacted quickly to get them out of my ears. I figure it has something to do with the noise cancelling feature. I also figure it has something to do with me using my AirPods to run, thereby being exposed to moist conditions for prolongated times. I no longer trust headphones like I did.