A '''miasma''' is a poisonous atmosphere formerly thought to rise from [[swamp]]s and putrid matter and cause [[disease]]. [http://www.thefreedictionary.com/miasmas] | A '''miasma''' is a poisonous atmosphere formerly thought to rise from [[swamp]]s and putrid matter and cause [[disease]]. [http://www.thefreedictionary.com/miasmas] |