Outdoor smog hurts workers inside buildings

Berkeley Lab Scientists Find Evidence of Link Between Outdoor Ozone and Building-Related Health Symptoms

BERKELEY, CA — A team of researchers at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) has found evidence that the prevalence of building-related symptoms (BRS) increases with increasing outdoor concentrations of the pollutant ozone. They have also discovered that the type of air filter that some buildings use in their ventilation systems may also play a role in the prevalence of BRS.

More at

http://www.lbl.gov/Science-Articles/Archive/EETD-BRS.html