Just like a charcoal water filter, charcoal briquettes can be used to absorb moisture and odor from the air in your home. A while back, Gregory tipped us off on using charcoal to remove fridge odors, but they definitely work in other rooms, too. We've found them particularly helpful for "old apartment smell" if you're in an old building or moist smells in basement-level units.
I started doing this and will never stop! My tub shower are always spotless-so simple. Simple shower and tub cleaner: fill wand half and half. Wet surface and scrub. wow! leave in shower wash while you are already in there - This SO needs to be done in our bathroom.