What is a common smell associated with guard bees releasing their alarm pheromone?

Guard bees release alarm pheromones as a response to perceived threats, and the characteristic smell associated with this release is often compared to that of overripe bananas. This odor is due to isopentyl acetate, a chemical compound that is a major component of alarm pheromones. When guard bees feel their hive is endangered, they produce this compound, which serves to alert other bees and can also serve to deter potential predators.

The connection to overripe bananas is clear, as isopentyl acetate is the same compound that gives bananas their distinctive aroma when they are ripening. This unique smell helps beekeepers recognize when bees are agitated, and understanding this correlation can aid in managing bee behavior effectively during inspections or when working near hives.