http://www.totalductcleaning.com/Lungs_disease_-_prevention_is_better_than_control.html
One of the top concerns among environmentalists today is indoor expose pollution. Scientific grounds indicates that indoor dirtying is far more dangerous than outdoor pollution. Research has evidenced that most individuals spend most 22%of the daily time indoors, either in office or in homes.
Indoor dirtying mainly affects the lungs and other parts of respiratory tract. The most common lung disease evoked and triggered by indoor dirtying is asthma. The problem is acute and frequent in old and small children. Humidity, smoke small suspended impurities in the air is the main drive for triggering the disease.Total Duct Cleaning