The link between fresh air and good health is no longer environmentalist blather; it is recognized scientific fact.

The harmful effects of air pollution both indoor and outdoors is now an universal issue, as individuals and large governmental and corporate institutions a like grapple with climate change and such lifestyle and environment-related health concerns as allergy, asthma, cancer, and obesity.

There is no lack of voices and references for better lifestyle choices. Here is one I like:

Harmonious Environment, Norma Lehmeier Hartie.