RT @SmokefreeGov: Secondhand smoke contains over 7,000 chemicals, 250 of which are known to damage your health http://t.co/uxuVUBLPeL

RT @SmokefreeGov: Secondhand smoke contains over 7,000 chemicals, 250 of which are known to damage your health http://t.co/uxuVUBLPeL (via Twitter http://ift.tt/1vNivUZ)