Indoor Air Quality

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Forget Cigarettes — Just by Walking in a Room, People Add Bacteria to It

Researchers say each person sheds 37 million bacteria per hour each hour spent occupying a room. (Jeremy Wilburn: Flickr)

Researchers say each person sheds 37 million bacteria per hour each hour spent occupying a room. (Jeremy Wilburn: Flickr)

Our colleagues at California Watch have a yuck-inducing story today about indoor air quality. It turns out, Susanne Rust says, “You are a big bag of germs. And just by walking into a room, you add 37 million bacteria to the air for every hour you remain there.”

In a study published recently in Indoor Air, researchers at UC Berkeley and Yale University examined the effect of people on indoor air quality. This is the first time the “bacterial sloughing” of people in a room has been quantified, using DNA-based methods, according to UC Berkeley’s William Nazaroff, co-author of the study.

From the California Watch report: Continue reading