Felix couldn't shake away the fact that somebody was behind both the faulty runes, and the spread of the dragon pox. But what was their endgame? The spread was controlled, through Felix's and Edward's efforts.
The people who had suffered from dragon pox were now well on their way to recovery. The runesmith had been detained.
And yet, Felix still couldn't rest. So, he decided to go to the guards of the Emporium, and bring his fears to them. With Edward by his side, he left the clearing of the sick, now that there were no people in it, after the week had passed.
Felix knew that they should be going back to Elise, and to questing. He didn't know what Antonine and Patrick were telling Bael and the guild master, but so far, nobody had barged into the Emporium to drag them out by their hair.