Humans come equipped with an emotion of disgust.
Um right back in the-, our earliest history you see this need for purification,
for getting rid of substances that are yucky and nasty and might make us ill.
So there are certain products that we used in rituals for purification, things like vinegar, things like lemon,
and you find that those things are actually put into products nowadays
because in our ancient brain those are things that keep purity.