I remember a long time ago I was reading some computer forum, and a guy posted that it's not safe to have a PC in the same room as a humidifier. He said that a humidifier will spread water vapor all over the room, and the water vapor has calcium and other minerals in it that will leave a thin white coating on everything. He said even the PC's motherboard will be coated, and that will damage the circuitry. Is that true?