There's evidence that nonsmokers exposed to secondhand vape aerosol absorb similar levels of nicotine as people exposed to secondhand cigarette smoke. Along with nicotine, nonvapers are also exposed to ultrafine particles from secondhand vape aerosol, which may increase the risk of cardiovascular disease.

Does vaping in the house affect others?

Research into this area is ongoing, but it seems that e-cigs release negligible amounts of nicotine into the atmosphere and the limited evidence available suggests that any risk from passive vaping to bystanders is small relative to tobacco cigarettes.

Is second-hand vape smoke harmful?

Constituents of Secondhand Aerosol

Electronic smoking devices (ESDs) do not just emit “harmless water vapor.” Secondhand aerosol (incorrectly called vapor by the industry) from ESDs contains nicotine, ultrafine particles and low levels of toxins that are known to cause cancer.