“Sue” was a woman I used to know. Unattractive mole-like bumps grew all over her face making her very unattractive, and I wanted to look away when she talked to me.
It was not a mature reaction on my part. Visceral and primitive, yes. Mature, no.
What I was experiencing was the psychological phenomenon of disgust. Richard Beck, Abilene Christian University psychologist calls disgust a boundary psychology, originally designed to protect people from noxious foods and such.