Soap, yes… for hygene… and not one of our earliest inventons (if you’re thinking of speers and the wheel, that sort of thing). Perfume… have no idea to be honest. Yes, it’s been around for thousands if years, but I have no idea if it’s even close to the invention if soap (time wise).
I have shit in the woods, more than a few times, it’s great, you should try it, it’s really a just great, whish I could do it more often.