Experts seek to understand risks associated with vaping and e cigarettes 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 Critical Clues on E cigarette, or Vaping, Product Use Associated Lung Injury CDC Warning issued over new harmful lung illness EVALI caused by vaping What is ecigarette or vaping product useassociated lung injury (EVALI)?