I agree with you Ironraven, I can't think of any criminal statute he has broken at all in this. As far as I can see within the criminal statutes he has not committed any crime.

I also agree with you on part of the civil law side. Unless one of the other passengers actually gets sick and can prove causation and actual damages there is not much they can sue him for, however I think the airlines and government agencies can make a case for reimbursement of their expenses since they have suffered actual damages.