Posted by cinderkeys: Hysteria doesn't have any real evidence behind it. Failing to discover a virus or toxin that's making people sick doesn't mean the virus or toxin doesn't exist. It may simply mean we haven't found it yet. Think how many people died of AIDS before anybody knew what HIV was.
Is hysteria a real thing? Read more>>
See also: An abnormal odor caused by poisoning is now the trigger "in nearly all episodes of acute mass hysteria," professor Simon Wessely says