What is indication of nebulizer?

Nebuliser helps in administration of any type of drug(bronchodilator) till the level of bronchioles.

as it creates a mist of a drug instilled by breaking drug particles ,s o that they reach till the bronchioles. so as to dilate the bronchi, with its warm effect also helps in loosening secrections.

especially, in cases of COPD, Asthma,etc....