Earthquakes or anything simulating an earthquake will result in Miles outright fainting or curled up in a ball due to trauma. Memories of his father's murder would likely come up as well. Losing Phoenix or being unable to help or protect those close to him.

Miles also has a lot of insecurities relating to becoming too much like the monster man who took him in only to raise him to become something his father would have hated. He is far different from that person now but he still worries that it's still there in him.