Musty smell where?
Here's an idea:
up news papers help if it's in a container area.
Leave for a few days and repeat if necessary. Baking soda also will
Where is the musty smell? Oh old furniture you can put a few coats of shellac on to get rid of the smell.
Put a dehumidifier in the room that smells musty. And then use baking soda to soak up the odor and essential oils to bring out a good odor!