Mr. Bradford Gautier managed to swallow one in his sleep AirPods, which, however, after being expelled from his body, continued to function without it problem.
Bradford Gauthier recounted his experience in a interview with The Guardian. Apparently, the AirPod fell on his pillow while he was in bed watching a movie drowsy and somehow strangely ended up in his throat.
The next morning he realized that he had lost the AirPod and could not find it through the "find the Airpod" function as his battery was empty. He also realized that he had a problem drinking water because something "had stuck" in his esophagus, but he did not make the connection, until his son jokingly said to him: "did you swallow it in your sleep?"
He went to a doctor where he took an X-ray and found the lost AirPod lodged in his esophagus. The cphysician he didn't want to let it take its natural exit route through the digestive system, as he was afraid it might get stuck in the intestine along the way or break. He removed it with a long pair of forceps inserted through her mouth and thus Gautier avoided the worst.
Upon arriving home, Gautier found that the AirPod worked perfectly, although its microphone was slightly less efficient than before.
This is not the first time an AirPod has survived in its owner's body. In 2019, a man in Taiwan tried to locate his AirPod with the Find My Airpod feature on his iPhone and chasing the sound of the AirPod around his room. Eventually, he realized that the AirPod was hitting his stomach.