Abstract: A humidifier (1) includes a gaseous flow-generating unit interacting with a unit for producing fluid droplets in such a way that a mist is formed. According to the invention, the gaseous flow-generating unit includes a centrifugal fan (2) which is provided with an input (5) oriented along the axis of rotation of the fan (2) and a radial output (6) for generating a radial droplet-transporting flow.