theophrastus its really hard to read your posts you keep using really proper science and proper english. especially when you make errors in your judgement left and right.
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2NaOCl + H2O2 -> 2NaOH + O2 +Cl2
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this reaction will never happen just look at it, you have NaOH a basic agent and the acidic gas Cl2, i mean i'm surprised UC thought it would happen. and big deal with the chlorine i've smelled the fumes of bleach + HCl lots of times if you're not an idiot you'll turn away as soon as you smell it, i mean its real irritating smell but it won't harm you, sure if you inhale it directly you can get pulmonary edema or something serious like that...