I have no scientific basis for the following caveat. I have heard, and I believe, that vaping something with hydrogen peroxide on it, or the residual left behind, is less than optimum for ones respiratory system.
I wondered about that too glowplug and did a bunch of reading on it when I started vaping this cotton. I did that a year ago and don't have links anymore. I came to the conclusion that a bit of hydrogen peroxide was not going to harm me.
There's a lot of bunk about the advantages of hydrogen peroxide on the net. I don't agree with inhaling it or drinking it for any supposed health benefits. But considering the small amount I'm inhaling, I'm not worried about it.