I was having my morning tea, and I coughed or something as I was drinking and the tea spat up all over my lovely 27" iMac [left hand side screen] and the chin of the mac. How worried should I be? There are no opening at the front left of the computer, so no tea could have gotten in right? I gave the screen a good clean with a soft cloth and it looks spotless now. Is there anything else I need to do to clean it.