Random FactsChemistry factsWhat saturation of sulfur dioxide will cause people to coughSulfur dioxide is a colorless gas with a suffocating, choking odor. It is toxic to humans and concentrations as low as 8 ppm will produce coughing. Incredibly, in the Odyssey, Homer describes the burning of sulfur (formation of SO2) as a way that homes were 'fumigated'. Reference: http://mattson.creighton.edu/SO2/SO2_Info.html
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