GUM CHEWING

For YEARS, I never understood why I have this anger and annoyance with people chewing gum or with their mouths open. It started in high school, and I never knew this was an actual condition unitl a few years ago. My worst trigger is gum chewing, and it feels like I cant escape it, like it's everywhere. Especially at my work. How do you guys cope...? I know there isn't a way to get rid of this condition, but it's driving me insane.