What is the most logical next event?

How to impress your parents by cleaning the house
Dilute the musty smell in your house.
Open all the windows in your parents room. If weather permits.

pick from the following. 1. You don't need to open the windows if it is freezing cold outside. This will allow it to air out a bit, taking away any musty smells.; 2. If not, add a small amount of a solution of water to a spray bottle and spray it on your house's exterior and floor. Finally, wipe down all the walls and baseboards with a dust mop.; 3. Place rags and paper towels on the floor under the windows and on each side of the door. This will trap the musty smell into the moldy room.; 4. You can leave the window paned open so you can get in and out a few times a day and stay the whole day. This works well in the summer, while the colder season also means you'll want to soak up some more musty smells.;
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