I had a case that was really stinky, but it was not a featherweight. I'm not sure it was the glue, as the manual was in it in storage, and the smell was similar to stinky old books. I tried cat litter, newspapers and coffee. That didn't work. I did not try charcoal. I left it in the car all summer (in Texas) stuffed full of newspaper and cat litter. I think it worked, as it didn't smell when I sold it.
bkay