Before revision: History The cover of an 1882 issue of The Wasp, with an illustration linking sewer gas and disease During the mid-nineteenth century, when indoor plumbing was being developed, it was a common belief that disease was caused largely by miasmas, or literally "polluted air."
After revision: History upThe cover of an 1882 issue of The Wasp, with an illustration linking sewer gas and disease During the mid-nineteenth century, when indoor plumbing was being developed, it was a common belief that disease was caused largely by miasmas, or literally "polluted air."