A special generator is the answer to use as a musty odor eliminator in your home, apartment, basement, office, retail shop, restaurant, classroom, restroom, kitchen, locker room, rental properties or any other location. It also removes mold, mildew, tobacco odors, flood and water damage odors, fire and smoke damage and more. The generator uses ozone to kill mold, mildew and other microorganisms that thrive in damp environments. If the air smells musty, it is probable that live spores are in that air. Spores can reproduce rapidly and also create health problems along with damaging a building and contents. 
High ozone levels deteriorate the cell structure of microorganisms, eliminating their reproductive ability. If you need to know how to eliminate musty smell in basement, for example, place the unit in that space, open a window about two inches for a constant source of oxygen to create ozone, leave the air conditioner fan on to circulate air through the ductwork, set the timer for the recommended time depending on the size of the area and how much elimination is needed, and leave. Air conditioners will play a big part in this, so make sure that you have one ready to use. If you don’t have an air conditioning unit, you will probably need to get one installed to get rid of the musty air. For AC installation, it might be worth visiting https://www.callthegeneral.com/hvac/ to learn more about it. Hopefully, that will help to make the room cleaner. Anyway, it may take less than an hour for a small space and a number of hours for larger areas that may need to be vacated overnight or treated while the residents are off at work. You have to let the ozone dissipate for at least an hour before returning. When the entire space fills with ozone, ceilings, floors, closets, furniture, clothing and closets get sanitized and the ozone even goes down into crevices and cracks for a complete job of elimination.