It was still there in a very small quantity 2 weeks ago. I said screw it, chucked in some clean copper....smell gone in a few hours. Kegged it and the batch is delicious.
For ****s and giggles I even bottled a 12 pack when I noticed the stink bad 2.5 months ago. Well as a little experiment I tossed a 6 pack into the dishwasher and ran a cycle 1 day after bottling. Apparently the heat pasteurization worked like a charm cuz the heated ones are perfectly still yet the non-heated have about 3 volumes of CO2. Cool experiment but I kinda got lucky. I just force carbed the rest.