If this study finds that ventilation and air purification are ineffective against secondhand smoke, then why does OSHA allow workplaces to clear car exhaust and welding smoke with the same technology? Why does Barnes hospital use the same technology to keep its operating rooms free of viruses and bacteria?
Wednesday, September 08, 2010
Wash U Releases Secondhand Smoke Study Today
Posted by
Bill Hannegan
at
10:49 AM
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