Which chemical commonly found in vaping aerosol has been linked to the development of 'popcorn lung' (bronchiolitis obliterans)?

• A. Nicotine
• B. Acetone
• C. Propylene glycol
• D. Diacetyl

Answer: (D)

Verified step by step guidance

1. Understand the context of the problem: 'Popcorn lung' or bronchiolitis obliterans is a serious lung disease linked to inhalation of certain harmful chemicals.
2. Identify the chemical agents commonly found in vaping aerosols: Nicotine, Acetone, Propylene glycol, and Diacetyl are among the substances that may be present.
3. Recall that Diacetyl is a chemical flavoring agent historically used in food products like microwave popcorn, and it has been linked to causing bronchiolitis obliterans when inhaled.
4. Recognize that while Nicotine, Acetone, and Propylene glycol are present in vaping aerosols, they are not primarily associated with 'popcorn lung'.
5. Conclude that Diacetyl is the chemical commonly found in vaping aerosol linked to the development of 'popcorn lung'.