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Hydrogen Sulfide (H2S)

P. U. Stench (Pollutant: Hydrogen Sulfide) Air Villain

Hydrogen Sulfide (H2S)

Alias: P. U. Stench

Status: At Large

Description: (Compound) Hydrogen sulfide is a highly toxic, flammable, colorless gas with a characteristic odor of rotten eggs. People can smell it at low levels.

Crime: Just a few breaths of high levels of hydrogen sulfide gas can cause death. At lower levels, long-term exposure can cause eye irritation, headache, fatigue, and breathing difficulties for asthmatics.

Cause: Hydrogen sulfide gas is produced naturally by the bacteria in our gastrointestinal tract and by volcanoes and hot springs. It is released into the ambient air by wastewater treatment plants, gas and oil drilling operations, landfills, and farms with manure storage or livestock confinement facilities.