This is so nice to know. We had a tannery in my small town when I was growing up. It was located down on the river, and the stench was just awefull. The whole town would stink. I remember going swiming across from the tannery, and jump off the rope swing. When you were under water you could smell it in your nose it was so bad...I can't believe I use to douse myself in that. Just amazing I am still alive today..