I think somehow our body is pre-wired for some smells.
Healthy food is nutritious, so it smells good.
In the same way our body knows "dead person" is a very terrible smell, even if we have never encountered it in our life.
Maybe the uncanny valley is the same thing for vision -- we are wired to be wary of sick or dead people, who look "off" because of an expression, their posture, skin color, etc.
I think somehow our body is pre-wired for some smells.
Healthy food is nutritious, so it smells good.
In the same way our body knows "dead person" is a very terrible smell, even if we have never encountered it in our life.
Maybe the uncanny valley is the same thing for vision -- we are wired to be wary of sick or dead people, who look "off" because of an expression, their posture, skin color, etc.
Just a theory.