geoffkait,
I doubt oxygen is carcinogenic. It is toxic on some other levels, but that is a different topic (think of Stevie Wonder and similar issues). I just noticed that dweller mentioned O2 while you were responding about O3, including about possible carcinogenic effects of it. That is all. I suspect that dweller’s/Harry Pearson’s point was also O3, but I thought I would ask. It has nothing to do with dust covers, no matter how hard we try to make it all very smart, but once it is discussed why not clarify.
I doubt oxygen is carcinogenic. It is toxic on some other levels, but that is a different topic (think of Stevie Wonder and similar issues). I just noticed that dweller mentioned O2 while you were responding about O3, including about possible carcinogenic effects of it. That is all. I suspect that dweller’s/Harry Pearson’s point was also O3, but I thought I would ask. It has nothing to do with dust covers, no matter how hard we try to make it all very smart, but once it is discussed why not clarify.