Not sure whether this is bothersome to most people, but autoplay videos. I do NOT want some annoying fucking piece of shit video playing any time I click on an article or something. It is the most invasive and obnoxious thing imaginable. Therefore, I've been running with an HTML5 autoplay blocker extension for years. I WILL DECIDE WHAT VIDEOS TO WATCH AND WHEN!!!
Another one is candles, incense, cologne, perfume, and other such smells. Sure it can smell nice, but it's often way too strong and lasts way too long and gets annoying really quick. Also why the fuck do people douse themselves in perfume/cologne to the point that I need a respirator mask just to pass by them?!?!
Can't stand children. They're dumb and annoying and always in the way. Then they grow up to be asshole adults and create more annoying people. Fuck off!!!