That's is one thing I can't and won't dare to experiment. Too expensive. :bsmilie: It will be a for me to know, for you to find out.
But I show you a P&S camera Yashica T3 (will take a pic for record later) which has very serious fungus outside and the exterior len protection glass but the film loading area and the inner lens element totally clean. Yashica T3 is weatherproof. This cam has been stash is the dirty corner of the store room for 10 years.