I used to be that way...the key word is used...had siblings who got it really easily, I could play in it, never bothered to learn to identify it really....until I got a bit older and my immune system said "enough nonsense" and got even with me...now I get open running sores that stay for weeks..awful stuff, and I am really careful. Don't burn it, don't cut it, if you are really allergic get someone else to remove it. It isn't worth the grief.
My dad is the same story. For 63 years he never got poison ivy once. When I bought my place I put him to work cutting poison ivy vines on some of the yard trees and pulling it in the flower beds. Two days later he announced that he had his first ever case of PI.