Atomized mist humidifiers require Merv +11 air filters down stream to remove the minute particulate from the air. Best to use an evaporating pad and replace the pad every year. You know things are slow when a dehu bear answers humidifier questions. Regards TB
Bear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
Use +Merv 10 air filter. -Don't forget the "Golden Rule"