Trying to rid a copper downstem of Pan Rasna before selling... any tips?
When I ghosted one of my pipes with it, I scrubbed it with hot water and dawn soap. Let the Dawn soap sit in the stem for a solid couple hours, then rinse it with hot hot water. Then I blew threw it a bunch of times so it was dry, and then I let it sit for a couple weeks and the smell dissipated on it's own.
Bleach