“Ladies and gentlemen, in conjunction with Chinese immigration regulations the cabin will now be sprayed…  The World Health Organization insists that the procedure is harmless”

These were basically the words that we heard as we started our decent into Shanghai after our 13 hour flight.  Sprayed?  What is that about?  Sprayed for what?  Lice? Mad Cow?  STD’s?  Never in my life have I had to be sprayed for anything.