I've never been stung by a bee, wasp, or hornet, so I don't really have that fear programmed into yet.
Overall, I have no fear of bees as long as I'm not near a hive. I heard bees won't sting if they're just out and about, and only will sting when you threaten the hive. I heard wasps are just assholes though, so I will be weary of them if they're near me.