Mild Curses

You feel every discomfort of every sentient being that was directly and specifically necessary for the goods and services you use.

For example, if you bite into an apple, you can feel the hot air and sweat while you're picking it. You feel the pain in your back while you're driving it cross-country to a distribution center. Your feet ache in the last hour of scanning groceries at the store (where applicable. It's crazy some cashiers have to stand).

I've skipped a lot of steps, but you get the idea.

You're allergic to garlic, and disgusted by crucifixes. You sunburn easily. The amount of myoglobin in small, infrequent portions of meat is enough to sustain you as long as you maintain an otherwise healthy diet. You'll live an unnaturally long life: 125. Crossing the threshold of a sanctuary/cathedral/etc gives you a panic attack. Holy water grosses you out. You can't turn into a bat, but you get along well with them. You have a natural talent for aeronautics. People find you mildly charismatic. You can't enter a person's home without an invitation. There isn't an invisible force holding you back, you just find it unconscionable.

Edit: spelling

It does not taste good

It doesn't work for either of you if the other person is aware of the curse.

Shout out to: The Brass Teapot.

This one is mild(er) than that story, because physical harm doesn't work.

Inspired by the movie: The Dead Zone

It doesn't happen under scrutiny like measurement, or night vision camera observation.

You can let nature take it's course or save one, but you have to convince yourself why that person was the better choice.