

I think the thing is that your brain understands that this is something artificial, just like people feel sick at the sight of blood or a corpse or just something dead or wrong even if it looks normal or beautiful, but as soon as you understand that it is inanimate or artificial, the brain turns on a defense mechanism, I suppose, so to speak, the brain is trying to distinguish the living from the dead, I suppose. I think it’s called the uncanny valley effect.
It’s like your brain feels this look that seems to be specifically cursing you so that you do something stupid or screw up.