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