I once went to a barbeque where my friend was very proud of his new “smokeless” barbeque. The meat tasted insipid and might as well have been cooked in an oven.
When bees get angry, they release pheromones which communicate danger to other bees. The main component is isoamyl acetate which smells a bit like bananas.
Each beehive has a different personality. This is a product of genetics, hive size, queen age, worker age, nectar and pollen source, and many other factors.
Ok, so in a very gentle way, we have had a look at why smoking bees, as humans have done for tens of thousands of years, is a logical way of calming them.