miasmology
/maɪˌæzməˈlɒdʒi/ or /maɪˌæzmoʊˈlɒdʒi/Definitions
1. noun
The study of noxious or disease-producing miasms or vapors, especially in the 19th century
“The doctor practiced miasmology to understand the causes of the mysterious disease outbreak in the town.”
2. noun
The theory that certain diseases are caused by miasms or noxious vapors
“The concept of miasmology was widely accepted in the past but has since been largely discredited.”