Where we spend our time has much to do with our health and exposure to danger. A soldier stationed in a combat situation is very much in peril of enemy attacks a great deal of the time. While many of us don’t face this type of danger on a daily basis, we do live with the effects of indoor air pollution in most of the buildings we frequent.
Everyone is exposed to air pollution to some degree, both indoors and out. The amounts and types of exposure are based on where we spend the most time and what we are doing during that time.
The average person spends around 90% of their time indoors. This isn’t hard to imagine when we consider that around 1/3 of a person’s life is spent sleeping. Even the person who works primarily outside each day spends almost 60% of their time inside.
A factory worker might be exposed to many off gases because of the nature of the manufacturing. Some situations may require a breathing apparatus for safety, but even then exposure to some degree can be expected.