Bad Air Historically Thought to Cause Disease
This page is the CodyCross answer for the clue below from All Things Water, Group 1286, Puzzle 2 (Streams and Swamps).
Question is: Bad Air Historically Thought to Cause Disease
and the answer is: MIASMA
Word Meaning:
MIASMA — A noxious atmosphere or emanation once thought to originate from swamps and waste, and to cause disease.
Definitions from Wiktionary.