H/T Harley for this report:
…people might be surprised to learn that the human body adds to the air pollution by emitting volatile compounds with each exhaled breath.
One study done at Los Angeles universities studied these toxic compounds in human breath and found five specific carcinogens in trace amounts: acetone, formaldehyde, acetaldehyde, butanone, and isoprene. While these toxins are lurking in the air everyday, lawmakers argue that e-cigs must be banned because they are exposing the public to these same chemicals. In reality, the very toxins in ecig vapor are going to be found in human breath whether the person is blowing out vapor or simply exhaling.
The report cites one study with a list of exhaled VOCs (Volatile Organic Compounds):
For me, this raises the question of whether environmental e-cig vapour is exhaled vapour, in which case the above listed compounds may well have been added during exhalation, and not actually be present in un-exhaled e-cig vapour.
The same question might be asked about secondhand tobacco smoke.
In addition, it must be supposed that there are going to be trace amounts of all sorts of other compounds present in the atmosphere, varying from place to place. And since the characteristic odours of different environments (e.g. bakeries, kitchens, flower shops, drains) come from airborne mixtures of organic compounds, there must be vast numbers of these compounds (e.g. more than 4,000), which are inhaled and then exhaled, perhaps in e-cig vapour or tobacco smoke. Do these get added to the lists of toxic or carcinogenic compounds found in e-cig vapour and tobacco smoke?
Maybe they’ll ban breathing next?