Steaming a solution of purifed water + apple cider vinegar will actually kill mold particles in the room. Just mix the solution together, heat it up on the stove until it is boiling and let the pot or bowl fumigate the room. Make enough so it fills the entire room with steam. It doesn't need to be foggy or anything but it does need to get into all those places mold likes to grow. It will also travel into air cons and kill the mold too. I have heard that mixing h2o2 with it will created an added benefit of oxygenating (thus, killing) more particles but haven't tried it yet as the ACV worked for me.