Thanks guys. I'll take a vitamin and switch my toothpaste.
I have been ignoring the shortness of breath as a sensitivity to vaping and have been cutting back a bit and thought no big deal. I went to the doctor for something unrelated today and wasnt told my oxygen level until I was handed a slip with my vitals when I was leaving. I didn't look at it until I got home and realized my oxygen was only 94%. I realized in retrospect that is probably why the nurse came in and asked me if I felt lightheaded or faint. Which I did not.
I don't know how much I trust vaping anymore. It contains formaldehyde, yes it is lower level than cigarettes but then again the molecules are bigger and who knows how that affects our lungs. Then there is the diacetyl thing, yes it is a small fraction of the diacetyl in cigarettes but who knows what THAT molecule size is and how it will affect us?
Also, my lungs are not damaged from the pulmonary embolism I had a few years ago.

mike