Hearing Champ sounds that are not in the current Match -ARAM/Rift/Client

The last....I'd say 16 games I've played on ARAM, last ARAM I was in every time the Poppy would die she'd go "UGGHH" and then I'd hear Singe laugh every 3 or 4 deaths it seemed, or some strange sounding attack which I assume is one of Zak's. I HAVE AMBIENT NOISES TURNED OFF FOR ARAMS AND AT NEARLY 10% FOR SUMMONER RIFT. It's been happening a lot, my fiance hears it too, but only when he doesn't have his headset on, where as I use speakers. He said one game he heard Morgana Ult at random, in both ARAM and SR without a Morgana being present.

 The last time I played a game on summoner's rift was over a month ago I think, and I heard Jinx's rocket launch near me when I ult as I think Annie twice, even though she was not in the current game. Three times Yi died in my game and after death we'd hear him meditating even when we could no longer see his body until he re-spawned. Yi does this on ARAM as well if he dies while Meditating nearly...80% of the time I'd say.

 I have the same issue as this person http://boards.na.leagueoflegends.com/en/c/bug-report/dwimIAM8-ghost-noise-for-people-leaving-end-game-room-after-already-leaving where leaving the client up, I hear the sound of people leaving the room even though NONE of my friends are online and I closed the game screen ten minutes ago.

 I do not know if it is my laptop confusing sound files or something or LOL and the updates. It wasn't really that bothering/noticing much until recently when champions that where not in the game made sounds in the playing game.

Owl