Possible Clues:

• Dislikes balconies when end of rung is lowered
• Everyone's powers drop 25% with abnormal reactions
• Exhibition spaces moving opening down to get reactions
• Badly laid out galleries — they bring adverse reactions
• Common unit of work
• The reason for the bad reactions in shooting galleries
• Immunology concerns
• Sneezin' reasons
• Unhealthy reactions from colleagues about some work
• Scratch tests test for them