When I was very little, was on my way back from McDs with a straw, and several paper packets of various things including salt and sugar (yes, I was a dangerous criminal). I discovered that sugar tasted nice when sucked through a straw but salt did not.
But hang on ... salt and sugar were the same but different, just like the both and the nose were the same but different. Let me tell you, sniffing salt up one nostril is not fun.
A childhood belief about salt

others believed things like this
- Salt is bad tasting sugar.— cobra
- Salt is sugar from a different country.— Santa Puncher
- When I was a little kid I thought that salt was some form of an aged sugar.— Jodie
- I thought that veruca salt was green salt— Ninny
- I used to think that salt grew on salt trees.Anon
- I thought that a "sugar daddy" was a father who let his kids eat all the sugar they wanted.Anon