Dead Tourists and a Dangerous Pesticide

Phosphine gas is notoriously lethal (enough so that it was featured recently in a murderous episode of Breaking Bad). The pure gas is colorless and odorless so it carries no warning sign. It's a fast, systematic, and corrosive killer; it "denatures" and breaks down a range of enzymes and proteins inside the body, including the ones responsible for moving oxygen through the body, and severely