Well... you do possess the Spitfire ability yourself if you'd want to do anything to mitigate her temptation to laughter. I do not know if I can do anything to directly cancel out an item's ability...

[INTERFERENCE but

as for emma's question, he offers a smile]

You could always tell him that you've eliminated a corrupted. I do not think he would be so quick to sell your life when you took care of something that he himself would've done.