Just to add my opinion to the mix. On the restaurant analogy, the restaurant I worked in I never ate in. It's not the stuff that the Health Department checks you should be worried about, but the things that just end up happening. If you're using produce, I can guarantee you the boss/owner is just gonna tell you to give the celery you just dropped on the floor near the trashcan a quick rinse off and still use it, lol.
Also, you should be more concerned about bars in this respect. My aunt works in the Health Department. If a bar has a clean working sink, they pass. They don't scrutinize bar food the same way they do restaurants. Just food for thought.
On the e-cig: I find it kind of silly how over-the-top some people that have switched to PVs are. We willingly (most of us for decades) inhaled tar, thousands of chemicals, and quite a few carcinogens daily. The argument can be made that the past is irrelevant, but that's just not true. The fact remains that even if the juice we inhale isn't mixed/stored under pristine conditions, it would most likely take decades to do the same damage that a single day of cigarettes would do to us considering we're inhaling water, 1 or 2 chemicals, and flavoring agent.
The possible damage some of these ingredients can do (for instance VG breaking down into harmful chemicals under extreme heat) doesn't even compare to the damage some of the chemicals in cigarettes do (carbon monoxide, formaldehyde, the list goes on).
As far as I see it, PVs are damage reduction devices, and even under so-so conditions are still accomplishing that goal. Remember, PVs have never stated themselves to be healthy, just healthier. But what do I know