Possible Audio Glitch (Miss Fortune/Caitlyn)
I've noticed that whenever I proc MF's Passive, Love Tap, and there is a Caitlyn on the enemy team (cannot confirm if this works with a teammate picking Caitlyn), her Love Tap shot will make the same sound Caitlyn's Q makes when it deal damage. I've tested this for at least 3 FULL GAMES and it happened every game.
Also, I'm going to add that it doesn't matter where Caitlyn is on the map, the noise happens with Love Tap procs. I was using the Arcade Miss Fortune skin every time.
This is really infuriating and makes it really hard to concentrate on what you're doing. I will be sure to get a video posted of this audio bug later.