Humidifiers help us breathe easier when sick, but should you turn your humidifier off at night? Here's what to know about when you can run your humidifier and when you should turn it off.

Carley Millhone is a writer and editor based in the Midwest who covers health, women's wellness, and travel. Her work has appeared in publications like SELF, Greatist, and PureWow. William Truswell, ...