I found the ordinary recommendations from NALGENE itself. Basically, keep washing it - maybe it will come out. If I owned a dishwasher, I'd use it - but I don't.
This seemed helpful enough, until I scrolled to the bottom, and discovered an order form for sheets of Lexan. I don't know what I'd do with 4'x8' sheets of Lexan, but I'm thinking about it now . . .
So, elfdope, Chemistry Guru - what did you explain to me to do while I was almost too tired to think on Saturday?
Also, you Nalgene peoples - any tips or recommendations on getting the smell out?