Tobacco is the third line of defense for beekeepers Most beekeepers use "smokers" - devices that produce smoke from incomplete combustion of various fuels. The cigar calms the bee; it initiates the expected feeding response. The beehive was abandoned due to the fire.  Smog also masks the alarm pheromone emitted when the guarding bees or bees are crushed during the inspection. The chaos that followed was to open beehives for beekeepers and work without triggering defensive reactions. In addition, when the bees eat honey, the belly of the bees will swell, which may cause bees to spread.