You may be astonished! But really we sometimes do not think about our life. You have to think how we really alive? Without air or oxygen can we think single minute? No, we don’t. But we generally do not think about our environment usually our air quality.
I found some unique information here (http://www.cynergyair.com/airquality.html) about air quality. If we want to live very happily then we must follow these rules I think. I strongly believe it will help for you.