Militant Mushroomists

I had to have a chortle at this tale about a jar of mushroom soup leaking onto a plane passenger, who just happens to be allergic to mushrooms.

But then I have to wonder why you can only take a tiny bottle of shampoo on a flight, and in a plastic bag too, but a jar of mushroom soup is OK. Maybe it was concentrate which was why the passenger it leaked on had such a severe reaction. Or was it planted by militant vegetarians?!