I had never wondered about this, and learned it quite accidentally. I know bumblebees are useful and desired for pollinating flowers and crops and that we don't have enough honeybees. I had even thought bumblebees were clumsy and slow and that they didn't sting. Wrong. Not only can they sting but don't die from the sting. They are not as aggressive as honeybees, but will sting if protecting their nest.
While checking a bluebird nest box, I discovered a strange collection of dead leaves and fluffy fibers which I knew weren't the leftovers of a neat bluebird and was about to pull it out and clean the nest to get it ready for a new family. When I touched the top material a couple of bumblebees crawled out and flew past me, one touching my lip and another my arm. More seemed to be appearing and I thought I'd better move away. Then I realized the two places they "touched" were stinging like crazy.
The next day I decided to try to close the door of the box to protect the bumblebees, and when I touched the door and began to close it, a buzzing sound seemed to announce, "She's back!" Two more bees popped me before I could get away. So, I guess they didn't appreciate my help or interference.
My trusty fire ant bite remedy relieved the intense stinging in a very few minutes.My mom was given this recipe years ago by an exterminator:
25 aspirin, crushed
Add to 1 pint bottle of rubbing alcohol
Add 1-1/2 oz. spirits of camphor
It works like a miracle and I'm never without it.