Is galvanized black powder toxic?

The harm of zinc plating to people is mainly through inhaling the invisible odor volatilized from zinc pool, such as zinc oxide, zinc chloride and pure zinc. In fact, inhaling these will cause thirst, chest tightness, dry cough, headache, dizziness, high fever, chills and so on. There is also a kind of dust that is irritating to eyes. Oral stimulation of gastrointestinal tract. Long-term repeated contact is irritating to the skin. The harm of zinc plating is undoubtedly the discharge of zinc plating solution after the process, which contains some heavy metals or harmful metals, and a large amount of discharge will have an impact on the environment. We used to use galvanized pipes as water pipes. If we use them for a long time, the galvanized layer will fall off, and if we eat them by mistake, it will cause serious health hazards.