Insight, you should probably worry less about the chlorine/chlorine dioxide factor.
H2O (water) is not hydrogen.
H2O2 (hydrogen peroxide) is not hydrogen; and finally breaks down into H2O.
CO2 (carbon dioxide) is not carbon
CO (carbon monoxide) is not carbon
CLO2 (chlorine dioxide) is not chlorine; and finally breaks down into hydrochlorous acid and sodium chloride (which is not chlorine either).