Nice bees don't respond very much to alarm pheromone. Defensive bees do. The smell of banana does have some of what is in alarm pheromone.
Alarm pheromone: isopentyl acetate (IPA), butyl acetate, 1-hexanol, n-butanol, 1-octanol, hexyl acetate, octyl acetate, n-pentyl acetate and 2-nonanol
Artificial Banana: isopentyl acetate
Banana smell: isopentyl acetate