I have the same problem and was wondering is implants were a fix or if that would just cause a different denture odor type problem.
I want to say thank you to everybody too. I have the same crown smell problem with a little difference. Several time I did try to check the smell before the breakfast, it wasn't there. It comes back after a few hours and stays all day. I couldn't figure it out how the smell dissapears during the night if it is resulting from the bacteria that can't be cleaned. ??
I think I will go with a denture if it solves the problem. Don't care how it looks anymore.