[CORRECTION!: Queen Bee exudes 'pheromones,' not 'odors,' not 'aroma' nor 'smell.' Sorry about that.]
To deter robber bees theOZer applies Vicks VapoRub around the front of the Moz East Bee Colony beehive entrance. Thank you Michael Bush for sharing your bee knowledge and recommending you use Vicks VapoRub to deter robber bees.
Love Bees, theOZer
http://www.youtube.com/watch?v=qdnXrYLHvak