In all seriousness, do you not wash your clothing in water then? A tee-shirt washed and rinsed in water, then allowed to air dry will stiffen. Consider the area of the tee-shirt with respect to the area of the atomizer and the fact you are in constant contact with the shirt, breathing whatever gets "knocked off" of the shirt throughout the day.We will have a differing opinion here- unless you have very soft water. Even with a blow off it will stiffen the wick when dried, and whatever deposits left over will get to the atomizer and be inhaled.
Your call. But after watching the medical controversy surrounding ultrasonic humidifiers I take no chances.
Also, the only references to ultrasonic humidifiers regarding health that I can find speak of "humidifier fever" and indicate the underlying cause is most likely bacterial, viral or amoebal infection via breathing atomized water containing those micro-organisms.
Do you have any links to information other than "humidifier fever" that address deposit inhalation?