I can say with almost complete certainty that Hikaru HAS smoked a cigarette before but only she and people she lets see her smoke would know if she really does. After all there probably would be some photograph of her doing it if she was a "smoker."

As for the voice thing.. I think she may be too smart to combine the two. But that is just my opinion.. which means like.. nothing man.

After all, Gackt smokes like a fiend.. but I'm sure he is not as smart as Hikaru.. but that is not to say the man isn't smart. I mean you have to be smart to make it.. like really make it as both of them have, you know?