WAAAAIIT! Get a good high efficiency furnace filter or air cleaner that doesn't produce ozone and have your duct work cleaned professionally. Ozone toasts your lungs and can cause heart impairment. Clean up your environment inside your body and out with silver colloid and electrical blood cleaning available at: http://www.sotainstruments.com/ STATE OF THE ART INSTRUMENTS uses the Beck devices. Get Alpha Lipoic Acid to protect tissue; Pantethine to wipe out the toxic byproduct of endemic Candida that amps up mold toxicity; and Ascorbic Acid to tone down allergic response. And clean your house, either with a 1 cup bleach to one gallon water solution or with silver colloid you make cheaply with SOTA's electrical blood cleaner. Remember not to eat spices like garlic as the microtoxins will jump into your system as electrical blood cleaning enhances cell 'porosity.' Blessings. P.S. Take care using oxygen as any electrical outlet can spark an explosion and fire. GOD BLESS US WITH MIRACLES OF HEALING.