Ah, nothing in the world like the aroma of Black Liqour. It permeates your body and you can’t wash the lovely smell off.
I worked at P&Gs most PROFITABLE plant in the entire US. Buckeye Cellulose in Perry Florida. We made the purest filter paper stock and textile thread stock there was. Choice plantation pine, a closed cooking, washing, bleaching and formation process with steam generation and liquor recovery/regeneration. Lots and lots and lots of chemicals.
In the bleaching plant where I automated it, the chrome in the bathrooms on the top floor were all black. Pipes had to be lined with nylon like inserts and made from 316SS or better. A nasty building. I had to quit after I accomplished the main goal because of all the people missing arms, fingers, etc. Too many damn nip points in the whole sequence.
It took me a hear to get that smell out of my nose, and I can smell a pulp plant miles off to this day.