With the popularity of Juul and other trendy vaping products, researchers are becoming more interested in how long-term exposure to flavouring chemicals affects our lungs. New study shows unexpected chemical reactions with flavouring in vape liquids Kelly Crowe · CBC News · Posted: Oct 20, 2018 9:00 AM ET | Last Updated: October 20 A new study suggests some flavouring agents used in vaping mixtures undergo chemical reactions, resulting in compounds that experts don't know much about. (Aliaksandr Barouski/Shutterstock) This is an excerpt from Second Opinion, a weekly roundup of eclectic and under-the-radar health and medical science news emailed to subscribers every Saturday morning. If you h... [Read more]