Something stinks here. There's nothing more filling than a bag of peanuts on Southwest's flights that I know of. I think the "food poisoning" angle is bogus.
It's not food. Peanuts, even among the allergic, don't cause unconsciousness.
UPDATE:
"LINTHICUM, Md. -- A plane landed at Baltimore-Washington International Airport late Thursday night apparently with several people unconscious.
Sherman reported seeing two planes possibly on the airport's runway, surrounded by police vehicles. Since the incident, air traffic at BWI has been slow. In fact, Sherman reported at 11 p.m. that he had not seen a plane land or take off from the airport since arriving at the scene."
http://www.thewbalchannel.com/news/3536051/detail.html?z=dp&dpswid=2266479&dppid=68758