Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Sharp rise in use of high strength vapes, research shows Proportion of adults using e cigarettes containing up to 20mg ml of nicotine has increased to 32.5% from 6.6% in 2021 : r science A new study published in Nicotine & Tobacco Research found that those using e cigarettes alone were more than twice as likely to develop COPD than people who didn't use any tobacco products, How Many Packs of Cigarettes are in a Vape?