Wow! Wouldn’t that be something if it were the salt!
Well, the baking soda in the salt.
I tried baking soda to brush my teeth with, instead of just plain water (yuck) and that bothered me a lot, and that was quite a while ago, but I never thought that the salt would have that in it until I checked.
I have to read labels diligently and you’d be surprised what’s in foods that you’d never expect. Or see a need for.