I think I would agree with Dr. Khara. It's something we need to be aware of and watch, but the nicotine is the bigger issue here in a lot of ways. We don't know what the effects are. So let's design whatever system we're going to design so that we can find out what the problems are that may be created by the inhalation of these products.
On November 4th, 2014. See this statement in context.