Justin Bieber, I'd probably have to scratch my eyes out au wear earplugs for the entire flight. Any of the Kardashians and Jenners, they are the worst.
Basically any celebrity that smokes weed, can't stand the smell of it and even if they're not smoking it they'll still smell of it (most likely) which will most likely make me vomit. London stinks of it now, especially where I live. Ugh! >.<