I bought an old plywood DB a couple of years ago. Actually my friend picked it up for me while I was out of town. It’s been at his house in it’s vinyl case and I guess I wasn’t too enthusiastic about playing this particular bass because I left it there. Now I brought it home and can smell Mold. I cleaned off all of the white spots from the outside and threw away the case. I aired it out outside with a strong fan blowing at the top to try an encourage airflow through the f holes. Now it’s in my garage. I’m quite surprised at this given how dry Calgary is. I can see lots of splotches on the inside. Any recommendations given that it’s a plywood bass and not worth taking to a luthier to remove the top and scrape it out?