Interesting coincidence: not Airpods, but, my Bluetooth earbuds start cutting out when running next to an executive jet airport.
There is a large cell tower next to the perimeter fence as well, but, the cutting out is highly localized. Approach from the east, starts flaking about 300yds away. N/S bike path running along the fence, no issue until about 50yds from cell tower, and then again about 50yds past the tower (and only right at those spots). Approach from the SE sidewalk, no problems.
During workouts, I go past several other towers, no issues.
I wonder if something along the lines of instrument landing systems, airport beacon, etc. Something transmitting from inside the fence line. But would not rule out something with the cell tower.