That’s not too shabby for a humidifier that’s small enough to fit in a small backpack. Here’s the caveat, though: Unlike the Dreo HM311S, I wouldn’t rely on this to humidify a bigger room.

Room size matters. Humidifiers are available for small, medium, large, and extra-large rooms, and for entire houses. Determine whether you prefer a portable or whole-house humidifier. Portable ...

You can measure your room's square footage with a tape measure. Then, read up on the humidifier you're considering and whether the brand recommends it for small, medium, or large spaces. "If you buy a ...

so it should help raise the humidity quite quickly in a smaller room, while the 360-degree nozzle lets you aim it to wherever you need the humidity first. This small humidifier by Honeywell is ...