Noah and Michael dead?

Noah and Michael stared at the fallen vampire without batting an eye. Then, all of a sudden, the vampire began twitching his limbs. Soon, his whole bloated carcass trembled violently as yellowish goo oozed out of the tumors in his body. The strong putrid smell of ammonia and sulfur overwhelmed Michael's senses. 

It was quite nauseating as Michael had a strong urge to throw up. His face was turning green when the vampire's body began to bloat while his body released a green mist.

"He's gonna explode!" suddenly Noah shouted. In a snap of time, Noah cast the void step, grabbed Michael by his hand, and dashed into the air. Michael had zero clue how Noah found the vampire was about to explode. But just as he said, the vampire's body bloated rapidly, releasing more and more green mist until it exploded. The explosion wasn't a small one. It was as though a mini atomic bomb had gone off. One could see the mushroom cloud from a hundred miles away.