As for humidifiers, specifically ultrasonic ones - we bought one for our baby, but immediately with it also the best water purifier we could find (Zero water) t

As for humidifiers, specifically ultrasonic ones - we bought one for our baby, but immediately with it also the best water purifier we could find (Zero water) that produces demineralized water practically absent from other molecules than H2O. There is no dust the next morning on the floor (or anywhere), there is no buildup of calc in the machine. I do believe that breathing that fine dust isn't very healthy long term, but that article outright lies about using it = taking 50 minutes out of every 1440 minutes of everybody's lives. We would see this effect in dusty (ie Saharan) regions already, there are hundreds of millions of people living in those conditions. What is dust if not small particles of stones and organic compounds flying around.