/industries/oilandgas/b/oil-gas-blog/posts/monitoring-hydrogen-sulphide-h2s-corrosion-in-oil-gas-upstream-industryOverview The dangers of Hydrogen Sulphide (H 2 S) aka Sour Gas in oil and gas production are well known. A highly toxic, corrosive, flammable and explosive gas. H2S is colourless and although characterised by it “rotten egg” smell, at high concentrationsen-USTelligent Community 13