Oh I got something cool: I can HEAR MAGNETS
I wear hearing aids with whats called a "t-coil" setting, which is a way to listen to things privately without using earbuds or headphones by using magnets! I got this thing that I just wear around my neck if I want to listen to stuff on my phone for example.
One time, I was walking from class to the library and I heard this really loud BRRZZT noise as I was entering and freaked out. Nobody else seemed to have been bothered by the noise. I step in and out the door and it doesn't happen again. A few hours later I leave the library and BRRRZTTT. What was going on?!?!
It was the book scanners that libraries have besides the doors (yknow those weird columns). I accidentally left t-coil on and I was hearing the scanners lmao