For me my immunity is scorpions venom (has happened to me lots of time to actually say that u do have an immunity) I first found out I was immune when I was laying down I'm bed and I felt something sting me twice so I got up real quick and saw that there was a fat looking scorpion, I was a kid so I didn't know how poisonous it was and my mom just told me to kill it and just to go back to bed and I asked her if I was going to be ok and she said that I was immune so of course I asked and she told me that when I was two years old and mother scorpion stung me along with its baby scorpions and she freaked out and when we got to the hospital the doctors said the venom wasn't acting like it usually does in other patients. Couple years went by and still got stung by them and nothing really happened to me other than the stung area got a bit swollen for a couple hours and that's it. Apparently I inherited it from my mom so that's my immunity but it might or might not be a very special one but at least I don't have to worry about them. Edit one: the salt in this thread is real lmao Edit two: so many replies thanks for keeping it interesting Edit three: made some research for those saying that the scorpion that stung me wasn't really poisonous and that it's venom was just as strong as a bee, did a little research on its scientific name for you ppl to Google it, it's name is centruroides limpidus #7 most poisonous in the WORLD and top three deadliest in my country.