Use of electronic cigarettes impairs indoor air quality and increases FeNO levels of e-cigarette consumers
This study looked for the presence of various types of chemicals in the air after vaping. They tested three e-liquids using volunteer vapers in a cafe-sized room.
What it Found
The results showed PG, VG and nicotine were released from vaping, as you would expect. They also found a 20 percent increase in polycyclic aromatic hydrocarbons and over twice as much aluminium in the air after vaping.
The authors concluded “[e-cigs’] pollutants could be of health concern for users and secondhand smokers.”
This has been picked up in the media with claims that vaping negatively impacts indoor air quality.
What’s Wrong With it?
“Clean” air isn’t so clean. That’s why taking background readings is important. Otherwise you might mistake normal components of air for something being emitted.
The authors took a background reading, but did so on a different day to the testing.
This is a big problem – as noted by Dr. Farsalinos in a letter to the editor about the study – because the levels of chemicals can vary from day-to-day.
This led to many strange results. For example, they found lower quantities of most metals during vaping, even though we know e-cigs give off small amounts of metal.
Also, no other second-hand vaping study has found PAHs. The baseline reading issue could explain this anomalous result.
Analysis of the Study
Farsalinos and Polosa (2015) Safety evaluation and risk assessment of electronic cigarettes as tobacco cigarette substitutes: a systematic review (discussed under “passive vaping”)
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