As Matt pointed out in his video, formaldehyde could have been formed only when the heated coil was fired at 5 volts (which has a 12-watt mod setting) the aerosol produced had an estimated temperature of 600 degrees Celsius, which is equivalent to 1,112 degrees Fahrenheit. The auto-ignition temperature for charcoal to burn without an external flame is around 660 degrees Fahrenheit. Obviously, such temperature settings used by the researchers were unrealistic and would likely burn your face off if you tried to replicate it.
In an effort to address these flawed assumptions on the part of the scientific community, a couple of researchers have established real-time measurements of e-cigarette use for future research purposes.
Data from 185 vapers using Smokio were gathered for 116 days. The research team distributed vaping kits that used a lithium-ion battery with 3.7-volt nominal value and a capacity of 650 to 900 mAh. The kit also included glass clearomizers with dual coil setup with an impedance of less than 2.0 ohms each, and a capacity of at least 1.5 ml e-juice.
Dubbed as the "1 Million Puffs" study, it yielded the following results:
During the first 60-day of use, the rate of isolated puff increased from 8.14% to 11.25% (p<0.001) and the mean number of puffs by series decreased from 6.78±8.13 to 4.66±5.07 (p<0.001). During the same 60 days of use, the number of puffs/day decreased from 209 to 127 and the puffs are less often isolated (9.28%).
This result serves as additional supporting evidence to the initial findings of previous studies concerning the effectiveness of e-cigarette use in reducing nicotine intake and encouraging smokers to quit.