1 Dwalin: Alvissa, after a wee discoossion wi' yer companions, I've decided tae show ye the sikkret dwarven passage throu yon Orcrift Moontains. {translation: Alvissa, after a bit of discussion with your companions, I've decided to show you the secret dwarven passage through the Orcrift Mountains.}
2 Dwalin: {coils of grey smoke rising from his beard} I juist couldnae bear the thocht o' leavin' ye stranded in the wulderness. {translation: I just couldn't bear the thought of leaving you stranded in the wilderness.}
3 Alvissa: Is that smoke coming from your beard?
4 Kyros: Nope. Definitely not. I'm a fire wizard - I know smoke when I see it, and that's not it.

I think he came through that fireball pretty well, all things considered.

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2015-11-04 Rerun commentary: In this world the common saying is actually: "Where there's smoke, there's Kyros."

Dwaling coming out of the fireball relatively unscathed is a clear application of non-fatal explosions.