Humidifiers may help people sleep better, especially those with a cold, allergies, or obstructive sleep apnea.

Note that evaporative humidifiers use a fan to disperse moisture and can be noisy while running on high to address particularly dry conditions. This may be a good thing if your baby sleeps better with ...

But humidifiers are more complicated to use and care for than some other household appliances—and doing so incorrectly can be worse for your health than not having one at all. Here’s what to know ...