Originally Posted by mikebg
I really don't think the behaviour of the surrounding passengers is the issue. It is the gross insensitivity of the passenger with the ham sandwich. (NOTE: I think that meat and milk, despite being a stricter halachik prohibition, has less cultural connotations. The average westerner will know that Jews in general find ham offensive, but is unlikely to be aware of the meat+milk problem).
You can never tell what kind of meat MKD or BK put in their hamburgers. It can be ham just as well.
When in a sandwich, ham is just like any other pastrami (the smell can be a little different

). Unless the guy yells around that he is eating ham on LY, there shouldn't be any problem.
If someone walks into an LY plane with a brown MKD bag with cheeseburger, fries, a milkshake and a piece of beef jerkey in hand, I do find it "a little" offensive that might even trigger a security event on the plane (security on LY flights do not like troublemakers).