#3 Phosgene is a highly toxic, colorless gas with a strong odor that causes vomiting & trouble

#3 Phosgene is a highly toxic, colorless gas with a strong odor that causes vomiting & breathing trouble & it was used as a chemical weapon in World War I.

Hydrogen chloride is a colorless to yellowish gas with a strong odor, that causes skin, eye, nose, and throat irritation.

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