In yet another serious health alert on e-cigarette use, researchers have documented first-ever case of a new form of damage from vaping products in a youth which is similar to "popcorn lung," a condition seen in workers exposed to food flavouring fumes in microwave popcorn factories.

If inhaled, the chemical called diacetyl causes bronchiolitis, which is characterized by the small airways of the lungs becoming inflamed and obstructed.