I don't know what you native English speakers say this when showing your big repulsive towards what one has done.

I don't want to see what he has done, because that would pollute my eye. (Because he used to mess up anything)

In Chinese, it is very terse -- "Wu Yan" (means "pollute one's eye")
Maybe "I'm afraid to look" or "I'm afraid to look for fear of what I might see".
It sounds much like in a polite way. Emotion: big smile