I'd guess that initially, soneone's wrist, as well as being available to
   be stung, might have had a watch band, adding a bit of "animal" odor and
   crossing the threshold of inciting a bee to sting.
   Once the sting has happened, a sting or alarm pheromone (from the bee)
   takes over to identify the "intruder" for while (an hour maybe).
 
   More severe reactions to bee stings have been associated with use of
   ibuprofen, but there's a fair range even in an individual
 
 
   Kerry Clark, Apiculture Specialist
   B.C. Ministry of Agriculture
   1201 103 Ave
   Dawson Creek B.C.
        V1G 4J2  CANADA          Tel (604) 784-2225     fax (604) 784-2299
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