Isoamyl acetate is used in lots of cosmetic products as a solvent.
As for honeybee aggression then here's a theory which will get slated from the outset but nevertheless may have a smidgeon of relevance. The ban/withdrawal on foliar neonics used in gardens and other neonic applications may be having an effect. Aggression is likely to have been subdued as a consequence of sublethal dosing as is swarming. Both seem to have anecdotally at least been reported more and this would be consistent with what would be expected with a reduction in use.
As for honeybee aggression then here's a theory which will get slated from the outset but nevertheless may have a smidgeon of relevance. The ban/withdrawal on foliar neonics used in gardens and other neonic applications may be having an effect. Aggression is likely to have been subdued as a consequence of sublethal dosing as is swarming. Both seem to have anecdotally at least been reported more and this would be consistent with what would be expected with a reduction in use.