In our society it has been estimated that we spend up to 90% of our time indoors. EPA 2 studies of human exposure to air pollutants indicate that indoor air levels of many pollutants may be 2-5 times, and occasionally, more than 100 times higher than outdoor levels.
Over the past several decades, our exposure to indoor air pollutants is believed to have increased due to a variety of factors, including the construction of more tightly sealed buildings, reduced ventilation rates to save energy, the use of synthetic building materials and furnishings, and the use of chemically formulated personal care products, pesticides, and cleaners.
A recent poll posted on the Health Canada website asked the question:
“ How concerned are you about the quality of your indoor air?”
89% answered that they were somewhat to extremely concerned.