Hydrogen sulfide - Environmental Health
Hydrogen sulfide (sewer gas) is a colorless gas with the odor of rotten eggs. The odor is detectable at very low concentrations, about 0.0005 parts per million (ppm) to 0.3 ppm. Hydrogen sulfide is produced naturally by decaying organic matter and is released from crude petroleum, natural gas, volcanic gases, liquid manure, sewage sludge, landfills, and sulfur hot springs.
DA: 41 PA: 88 MOZ Rank: 81