Board Thread:General Discussion/@comment-27596920-20141205004927/@comment-25555436-20141218021249

^Yang doesn't absorb energy, she gets stronger the more damage she receives (not the same. At all). Her catching fire could be perfectly natural, just part of her semblance. I mean, Ruby leaves rose petals out of nowhere when using her semblance, and Weiss can create glyphs (in case you didn't know, she only makes glyphs, their effects depend on the Dust she uses), Pyrrha has freaking magnetism. For Yang to get on fire when angry, without Dust in the equation, it's perfectly reasonable.

And being infused with Dust would mean she would have much more control over fire than she has shown so far (which is, no control of fire at all other than a flaming hair).

Yet, like you said, we have yet to see a verified case. That means, your whole point there is a complete hypothesis without really anything to back it up. It depends too much on something that hasn't been shown nor confirmed, beyond that some people do, and we don't even now if they let kids and teenagers in high school do that.