White vinegar smells a bit like a pickle that had a bad day, but it kills mold spores like a pro. Mix equal parts water and white vinegar in a spray bottle. Spritz it on surfaces (not on electronics, unless you want a shocking surprise). Let it sit for 10 minutes, then wipe it down. The vinegar smell disappears as it dries, taking the musty odor with it.
You can also put a bowl of vinegar in a musty room overnight. It’s like setting a mousetrap for stink. By morning, the air will smell cleaner. Your room might smell like a salad bar for a bit, but hey—it’s a fresh salad bar, not a swamp one.
