Here is the advisory in question:
http://www.e-cigarette-forum.com/forum/rebuildable-atomizer-systems/562106-ecf-sub-ohm-advisory.html
Here is the part I take issue with:
"Inhalation of sub-ohm vapor is probably not the same as regular vapor and therefore may have additional risk. It is likely to create conditions where potential carcinogens (cancer-causing agents) will be seen in measurable amounts, and so there must be some elevation of risk, which will escalate as resistance goes down and heat goes up.
We can regard this as significantly more important than battery safety at this time: there are no reported incidents of exploding APVs or house fires caused by sub-ohm rigs self-destructing; but there are probably thousands of people inhaling materials that are simply not present in vapor from a regular clearo run at 2.5 ohms."
I understand and appreciate the desire to keep the community safe, but this is simply inaccurate.
The paragraph suggests that sub-ohm builds are overheating vapor and producing dangerous cancer causing chemicals. Aside from the fact that not a single source was referenced, simple logic applied to the situation would strongly suggest subohm builds are no different in their potential danger than a regular clearo run at 2.5 ohm, I'll explain why.
When you get a dry/burnt hit, it's offensive. It stings the throat, and tastes awful. That's because overheating the eliquid causes the formation of Acrolein:
From Wikipedia:
"...is caused by glycerol in the burning fat breaking down into acrolein."
"[acrolein] is a colourless liquid with a piercing, disagreeable, acrid smell."
Acrolein - Wikipedia, the free encyclopedia
If the advisory was correct in suggesting that sub-ohm builds are overheating liquid, sub-ohm vapers would be constantly inhaling large amounts of acrolein. They aren't. A giant silky smooth cloud does not have significant quantities of Acrolein in it. A harsh hit from a 2.5 ohm coil with a choked wick (fairly common for the hit-or-miss quality of commercial coils) has significant enough quantities of acrolein to make most people want to vomit their lungs out.
If someone is inexperienced in coil building, it's very possible they could choke a wick or something else resulting in exactly what the advisory suggests. But the fact is, that has nothing to do with sub-ohm vaping, and non-subohm commercial equipment is just as likely to exhibit this, if not more likely.
Thoughts from the community?
http://www.e-cigarette-forum.com/forum/rebuildable-atomizer-systems/562106-ecf-sub-ohm-advisory.html
Here is the part I take issue with:
"Inhalation of sub-ohm vapor is probably not the same as regular vapor and therefore may have additional risk. It is likely to create conditions where potential carcinogens (cancer-causing agents) will be seen in measurable amounts, and so there must be some elevation of risk, which will escalate as resistance goes down and heat goes up.
We can regard this as significantly more important than battery safety at this time: there are no reported incidents of exploding APVs or house fires caused by sub-ohm rigs self-destructing; but there are probably thousands of people inhaling materials that are simply not present in vapor from a regular clearo run at 2.5 ohms."
I understand and appreciate the desire to keep the community safe, but this is simply inaccurate.
The paragraph suggests that sub-ohm builds are overheating vapor and producing dangerous cancer causing chemicals. Aside from the fact that not a single source was referenced, simple logic applied to the situation would strongly suggest subohm builds are no different in their potential danger than a regular clearo run at 2.5 ohm, I'll explain why.
When you get a dry/burnt hit, it's offensive. It stings the throat, and tastes awful. That's because overheating the eliquid causes the formation of Acrolein:
From Wikipedia:
"...is caused by glycerol in the burning fat breaking down into acrolein."
"[acrolein] is a colourless liquid with a piercing, disagreeable, acrid smell."
Acrolein - Wikipedia, the free encyclopedia
If the advisory was correct in suggesting that sub-ohm builds are overheating liquid, sub-ohm vapers would be constantly inhaling large amounts of acrolein. They aren't. A giant silky smooth cloud does not have significant quantities of Acrolein in it. A harsh hit from a 2.5 ohm coil with a choked wick (fairly common for the hit-or-miss quality of commercial coils) has significant enough quantities of acrolein to make most people want to vomit their lungs out.
If someone is inexperienced in coil building, it's very possible they could choke a wick or something else resulting in exactly what the advisory suggests. But the fact is, that has nothing to do with sub-ohm vaping, and non-subohm commercial equipment is just as likely to exhibit this, if not more likely.
Thoughts from the community?
), with-in 2 days (TWO DAYS) all she could tell me about vaping was that she wanted "those huge clouds like the guys at the Vape Shop do!" and brought home a mech and a generic RDA w/0.5ohm coil in it 
