There are different types of medicines and delivery devices to treat COPD. A nebulizer is a device that turns the liquid medicine into a mist which is then inhaled through a mouthpiece or a mask.

Delhi's winter smog is so bad right now that pharmacies are seeing a rush for eye drops, masks, and even nebulizers. With the Air Quality Index stuck in the "very poor" to "severe" zone (think 366-418 ...