Just clean the intake of the carb with any wet cloth or cotton etc., taking apart the engine would be a waste of time since it cleans itself as you run it, any damage will have already been done. Just run the engine and if it seems fine, it probably is although you may have shortened its life a bit.
Taking apart the heli is definately a good idea, make sure you clean all of the ball links to avoid premature wear. As for the rest of the heli, you can spray it down with de-natured alcohol and blow it off with an air hose!!!
Good luck, lesson learned,