Handbag musty odor

I have a vintage Coach bag that I purchased on Etsy. The seller said that they worked at Coach NY and has many bags. The one I have is from about 1995. It is in beautiful condition, however after I used it a few times I noticed an odor. The inside of the bag smells like an attic or basement. I have tried spraying it with the kind of deodorizer made for shoes. Also I put a bamboo odor absorbing pouch in it. And set it outside on and off for two weeks. What else can I do? I would love to use this bag and paid my well earned money for it. Thanks. EDIT: I am going to try the handbag washing. I have watched a few YouTube videos and feel confident to it. I will update in a new post once it’s completed. Thank you all!