We are aware that dust is everywhere, either at home, school, or at work. We cannot avoid dusty and stuffy air at school or work but out of 24 hours we spend 9 to 11 hours at home, therefore, we can ward off filthy and stuffy air from tightly or re-circulating indoor air. Such constriction and compression come from pets, wall dust, dirt, pollen, airborne allergies, dust mites, cooking vapors, home use chemical evaporation, air contaminants, and smoke, etc, which can cause many complicated contagious diseases like headache, itchy skin, skin allergies, coughing and sneezing and many other ailments in human and pet animals.