... Carbon monoxide (CO), hydrogen cyanide (HCN), poison smoke and fog This respirator is intended for applications in governmental ... airtightness and multiple protections against poison gas, fire, heat radiation and smoke and suitable for all kinds of adult ... : against Carbon monoxide (CO), hydrogen cyanide (HCN), poison smoke and fog.Mist Permeability Coefficient: <5%.Inhalation Resistance: <800Pa ...