Don’t use a mist humidifier. They suck. Use an evaporative one and add bacteriostat to the water.

Mine is a tub of water with a wick in it. It has a fan that blows air across the wick. That’s it.

Google removed “Don’t be evil”

Still parading that lie around? It’s easily verified as false. Their code of conduct ends with:

And remember… don’t be evil, and if you see something that you think isn’t right – speak up!