Yep. It's A Nasty Cold.

https://news.sky.com/story/delta-flight-from-salt-lake-city-in-utah-diverted-as-passengers-experience-bleeding-from-their-ears-13217099

So the lecture on why Apple have ruined the Bluetooth earbuds market will have to wait for another day.

Short version though;

What do you do with the other earbud when you have to talk to someone?