

Association of e-cigarette use with respiratory disease among adults: A longitudinal analysis. Flavoring chemicals in e-cigarettes: Diacetyl, 2,3-pentanedione, and acetoin in a sample of 51 products, including fruit-, candy-, and cocktail-flavored e-cigarettes. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. In other cases, like a lung transplant, it may take several months or years before symptoms appear.

Typically, it takes 2 to 8 weeks after illness or chemical exposure for symptoms to begin. Inflammation and scarring resulting from a lung transplant can also cause popcorn lung.

