sulphur (IV) oxide
carbon (IV) oxide
nitrogen (II) oxide
hydrogen sulphide
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Exposure to hydrogen sulfide may cause irritation to the eyes and respiratory system. It can also cause apnea, coma, convulsions; dizziness, headache, weakness, irritability, insomnia; stomach upset, and if liquid: frostbite. Workers may be harmed from exposure to hydrogen sulfide
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hydrogen sulfide (HβS) can be highly dangerous. Prolonged exposure to HβS can indeed lead to serious health effects, including respiratory issues, irritation, and even fatal conditions at high concentrations. However, sulphur (IV) oxide (SOβ) is still considered a significant pollutant as well, particularly because of its widespread occurrence from industrial sources and its role in causing acid rain and respiratory problems.
The question focuses on pollutants dangerous to humans, and while HβS is extremely toxic, SOβ is more commonly encountered in the environment at harmful levels, making it the more frequently cited danger in pollution contexts.
So, both HβS and SOβ can be dangerous, but sulphur (IV) oxide is often referenced in environmental and health contexts due to its more common exposure scenarios
