New medical research is raising concerns about possible links between vaping and bronchiolitis obliterans also known as popcorn lung, a rare and irreversible lung disease. Health experts say more long term E cigarettes Found to Cause Change in Mouth Bacteria Which Could Lead to Gum Disease or Oral Cancer Respiratory Therapy Vaping Nicotine Linked To Increased Risk Of Chronic Lung Disease WUSF CDC:The Vaping Related Lung Disease Outbreak May Be Ending