I’m probably just about the last person to realize this, but in case I’m not, I figured I should share it.
With Linux, whenever you delete something from a flash drive, you’re left with a .Trash-1000 file that shows up on other systems (and your Linux one if you view hidden files).
For some reason, last week I finally got sick of seeing the folder, which is trash, and looked up how to get rid of it.
Just use shift-delete on it and it disappears off of your USB device forever.
It’s kind of annoying that regular delete doesn’t work the way most users might expect it, too, but it’s an easy enough fix.
And it only took me a few years to figure out.