Are E cigarette Users at Greater Risk of Poor Immune Response to Flu, COVID? Newsroom Vaping likely has dangers that could take years for scientists to even know about E cigarettes, or vapes, use a battery to heat a liquid containing nicotine and other substances into an aerosol. Vaping is the inhalation of this product. So, why should you avoid them? In Vaping Research Uncovers New Dangers Ivanhoe Broadcast News, Inc.