I only remember about 3 times and all of those were when I was a kid. I have no idea whether it was a wasp or a bee because at the time I don't think I knew the difference.
As an adult my only real enemy has been the lovable dear fly. Those are silent and you don't even know they are around until you get bit or stung, whichever they do, and when they do you feel it believe me. It took me a couple of times to realise not to touch the spot even though it itches like mad. Once you touch it it seems to spread around and my reaction when I did was massive swelling,. The first time I got bitten I was mowing the lawn, felt something hurting on my forehead, reached up and brushed it off me and then proceeded to rub the location. Within minutes my face just below the bite started to swell closing my right eye and swelling my cheek just below my eye. It took a day to get back to normal. After that if I knew what had happened I would suffer through wanting to scratch it so badly I could scream. However, it didn't swell up when I didn't touch it. After that number three I didn't know what had happened and I reacted naturally without thinking and scratched it. Same result with swelling on my arm. The fourth time, I remembered and didn't have any real problems after the itching stopped.