Secondhand vape exposure: Risks and side effects What Are the Risks from Secondhand Vape Smoke? NVB Inc. Did you know? Second hand smoke can cause serious health conditions, including lung cancer, heart diseases, and even stroke! Kids are especially vulnerable, so protect yourself and theirs by keeping Myth Buster ~ "Second hand vape smoke" is actually water vapour and is not harmful to other people or the environment. #vape #vaping #vapeuk #ecigerette #smoke #quit