Of course I would save their life if I could. What if, after that piece of hamburger flies out, they have an epiphany and never eat meat again? What if they're a scientist on the verge of finding a cure for HIV? Anything is possible. Sure, they might go right back to eating meat, but I don't know that. There are too many "maybe's" to not save that person just because they're eating meat right now. Unless we were born vegetarian, all of us were eating meat at some point - I'd hate to think that if I were choking, a person who could have helped me didn't because I was an omni at the time.