Dimitri grinned with relief as he spotted his “brother”, for he knew that he could trust him. However, he was still scared, so he waited for Edgeworth to move before he made his way to the isolation room that was set up for dangerous diseases. As he entered the room, he drooped his wings such that the tips dragged on the ground.
“Mmm…,” Dimitri whimpered under his breath before he looked up at Zach because the older sibling was looking over him. After a moment, he shook his head, “Don’t feel sick. Didn’t really open the letter. I just heard the powder in it…”
Still, Dimitri wasn’t aware that due to his genetics, he had an extremely strong immune system. So, it is likely that he was naturally immune or very resistant to anthrax.