Human beings are messy. If you interact with another human being, some of their mess is going to get on you, and vice versa.
I suppose you could avoid other's messiness, by creating an austere life where you wallow only in your own mess, and avoid others. That might make you feel safe, comfortable and in love with your own mess, but you'd miss out on a lot. You'd miss having your life touched by others, and touching other's lives with your own. You'd miss out on love, real joy, growth, and pain (Yes, I wrote "pain"--sometimes pain is good.)
Will you get burned if you throw yourself into the world, and show love and kindness to your fellow human beings? Abso-friggin-lutely. No doubt about it. It happens on occasion. But that's barely a blip on the screen in comparison to all you get and give when you put on your waders, slog your way out into the world to build relationships.