Here's another thing that I think is strange. He was diagnosed in February, and I am assuming he's had at least a little physical contact (perhaps a lot) with his fiance and she doesn't have it. If he hasn't passed it on to her, why were they so concerned about him giving it to others in an airplane?
Unless...he was on a mission to recruit members for the Mile High Club.
Huh huh, I said "giving it to others."