A Kernel of Truth: Diacetyl, Popcorn Lung and E Liquids Dinner Lady Is There Diacetyl In E liquid? Vaped Diacetyl In Vape: What You Need To Know Shisha Vibe A Kernel of Truth: Diacetyl, Popcorn Lung and E Liquids Dinner Lady 2FIRSTS E Cigs in Malaysia: Diacetyl Exceeds by 2 Times, Heavy Metal Levels Meet Chinese Standards Yes, vaping is toxic. A U.S. teen developed "popcorn lung" after secretly vaping for three years a permanent, life altering disease. Officially known as bronchiolitis obliterans, the condition scars the lungs' tiniest