👉 Inhalers are devices that deliver medication directly into a person's lungs, rather than through a tube or nasal passage. They work by drawing air in from the mouth and then passing it into the lungs via the bronchial tubes, which lead to the alveoli (tiny air sacs) in the lungs where the oxygen is exchanged for carbon dioxide. Inhalers are typically used when medications cannot be administered through a tube or nasal passage, such as if you have difficulty swallowing medication due