Inhalation can take place via a steam bath or via technical devices such as nebuliser systems. A distinction is made between:
- Nebuliser: a compressor produces compressed air, which carries liquid particles with it
- Ultrasonic nebulizers: an ultrasonic crystal generates vibrations in the liquid, which eject droplets
- Membrane nebuliser: the liquid is pressed through a membrane with a defined pore size, forming droplets
There are also combination devices which can additionally aspirate secretions.