If you use tap water, that white mineral dust doesn’t just stay in the machine. Oh no. It gets launched into your room like an invisible confetti cannon. You’ll find a fine, gritty film on your furniture, your TV screen, and that one houseplant you’re trying to keep alive.
I once found a faint white ring on my laptop after a week of tap water humidifying. It looked like a ghost tried to steal my computer. Surprising fact: That dust can actually irritate your lungs, especially for people with asthma. So you’re not just coating your coffee table—you’re potentially coating your insides.
