Dead bees actually release 2 specific pheromones which a specific class of bees, the ‘corpse-removing bees’ detect and spring into action.

“The honeybees work together to fight off disease,” says Alison McAfee at the University of British Columbia, Canada

According to her research, honeybees pick up dead or diseased nestmates and carry them out of the hive. Removing corpses protects against infection, which can spread like wildfire in densely packed hives.

 

Reported on by New Scientist, full article here >> https://www.newscientist.com/article/mg23731604-900-smell-of-death-tells-undertaker-bees-its-time-to-remove-corpses/