the overwhelming feeling that you get when you meet or recently meet someone who is very charismatic. something about them has sticked with you, probably for a very long time, until you see them again. Being around them makes you contemplate things you have previously done and what you can do about it, for better or for worse. Your feelings about this person permeate throughout your everyday activities and if left uncontrolled may consume you entirely, as poisoning would.
Meeting someone that as the power to give you charisma poisoning gives you a warm tingly feeling whenever you think about them, and you will think less of yourself if you disappoint them.