My next question can go to anyone who's knowledgeable.
I've heard that when it comes to vaping, and the flavours that are used in vaping, there's a specific concern about an additive called diacetyl that causes popcorn lung. It's a very serious respiratory condition, but I see a lot of myths on the web, and whether it's true or not true...
Can you give us any information that you have about that condition?