Are You Inhaling Secondhand Coke?Are You Inhaling Secondhand Coke?

Are You Inhaling Secondhand Coke?
http://news.sciencemag.org/sciencenow/2011/12/are-you-inhaling-secondhand-coke.html

"We've all seen those color-coded air-quality charts on the news—warnings about smog, ozone, and pollen. Now it may be time to add a new alert to the list: illegal drugs. Researchers have found that regions with greater cocaine and marijuana use have higher levels of these drugs in the surrounding atmosphere."