How to track down Facebook notifications on OS X to disable them I have a Macbook Air running OS X 10.11/El Capitan and two days ago these notification just started appearing:



Perhaps I hit some special keys accidentally, but I want it to go away and it won't.  Furthermore, I have NO facebook option in my Notifications:



Safari:



Chrome:



How do I stop this?
Check Safari prefs too, as Facebook is not an app, but a web-based service…