How much zinc oxide do the hexachloroethane grenades release? Zinc oxide is extremely toxic and results in symptoms known as "metal fume fever." You only need a

How much zinc oxide do the hexachloroethane grenades release? Zinc oxide is extremely toxic and results in symptoms known as "metal fume fever." You only need a tiny amount of exposure - I once got sick from not wearing a respirator when doing a handful of quick spot welds on galvanized metal shelving (thought I could get away with it). All of the criminals involved in this deliberate toxic gassing should be on trial right now.