A new study shows that e-cigarette vapor exhaled by the user probably poses no risk to bystanders. The study found that vapor particles consist of droplets that evaporate almost immediately after exhalation.
The study was conducted at independent Lithuanian and Swiss academic institutions and laboratories, and was presented at the Workplace and Indoor Aerosols conference in Barcelona, Spain. It was funded by Fontem Ventures, owner of blu e-cigarettes. Fontem is a subsidiary of Imperial Tobacco.
Vapor and smoke particles are different
The researchers measured particle concentrations in the air during and after use of closed-system e-cigarettes (cigalikes). They found the particles dropped to background levels within seconds of the vapor being exhaled. The results were the same in rooms with and without ventilation.
Dr. Grant O’Connell, Vice President of Corporate and Regulatory Affairs at Fontem Ventures, said, “This also tells us how fundamentally different exhaled e-cigarette particles are compared to those emitted by smoking conventional cigarettes, the latter of which are reported to linger in the air for long periods of time. By contrast, no accumulation of particles was registered in the room following e-cigarette use.”
“This initial data supports the conclusions of Public Health England, the Chartered Institute for Environmental Health, Cancer Research UK and others that vaping indoors is unlikely to pose an air quality issue to bystanders and non-vapers,” said Marc Michelsen, Senior Vice President of Corporate Affairs and Communications at Fontem.
“This study adds to the evidence”
According to Dr. Michael Siegel, professor at Boston University School of Public Health, the results are significant. “The important finding is that although exhaled e-cigarette aerosol does contain a high concentration of particulates, the aerosol dissipates within seconds,” Siegel, a longtime proponent of vapor products, told the Daily Caller.
“This means that the particulate matter does not accumulate,” he added, “unlike tobacco smoke, which we know lingers in the air causing the concentration to build up over time. This study adds to the evidence that vaping poses minimal risks to exposed bystanders.”