Steven's initial reaction is, oh, gross, don't like that at all. Yet, when he actually sees what the dream is centered around, he can't help but lose any semblance of that cool. Instead, he lets out a quiet shriek dismay and launches right over there on wing.

"Auh- no, no no no-"

He tries to remember through his panic, that this is a dream and he can usually change things. He spreads his wings and gives them one powerful flap, trying to smother the flames with a blast of wind.