Question

question 5 of 5
diacetyl is...
...an ingredient that the fda has said is unsafe in any form.
...an ingredient that is considered safe in some foods to eat, but is not safe to inhale into the lungs.
...an ingredient in vape juice that some people also eat for a buzz.
...an ingredient in vape juice that is not good to inhale, but is not known to cause any illness.

Explanation:

Diacetyl is a compound. It is used in some food flavorings (like butter - flavored popcorn). When ingested in small amounts in food (as per regulated use), it may be considered relatively safe. However, when inhaled (for example, in the context of vaping or in some occupational exposures in food - flavoring factories), it can cause serious lung problems (such as bronchiolitis obliterans). The FDA has not said it is unsafe in any form (as it is used in food). It is not used for getting a "buzz" when eaten. And it is known to cause serious illness when inhaled.

Answer:

B....an ingredient that is considered safe in some foods to eat, but is not safe to inhale into the lungs.