3 ms·Is this article the first step in a funnel to sell more ultrasonic humidifiers?by dools 5y agoIs this article the first step in a funnel to sell more ultrasonic humidifiers?EamonnMR 5y agoI think the author has some sort of crank fear that they're filling the air with bad particles.istinetz 5y agoThe author has a very well articulated and defended fear. They're definitely not a crank, even if they've arrived at a wrong conclusion, which I doubt.