Seat backs, arm rests, stinky foods -- they're all among the in-flight etiquette dilemmas faced by frequent fliers, according to columnist Scott McCartney, who polls a panel of travel experts on how to handle six delicate situations. Frequent traveler Ron Goodenow offers a suggestion that might cover every scenario: "I think it would be great if an airline, as part of its pre-flight announcement, said something like, 'We have a very crowded flight today folks. Please be kind to your neighbor.' "

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