Demons, warlocks and dark arts... now could he have hoped for more? The day had just become more interesting. He hoped that necromancy was not part of the deal. That might become a problem. A magnet for trouble, however, if he would not be careful, he might actually start to cheer for this mortal.
"Before I answer... I take it this means that we are best friends now then," he grinned. "Now, as for your question. Gas. It was gas." He raised his hand to the height of his temple and let his finger circle next to his head. "Everyone," he mouthed. A few had gone crazy, most had managed to evacuate before the gas had influenced them.
He dropped his hand again. "I do not know if it is still present. Though... if I might reflect upon this..." He put up a pensive face. "It might explain some eccentricities among the people of the station. When you meet Steve Rogers, you will understand."