Shaykh Muqbil ibn Hādī al-Wādiʿī addresses the ruling on using an asthma inhaler while fasting. He explains that since the inhaler does not contain food or drink, it is unclear whether it invalidates the fast, and further clarification is required regarding its contents and effect.
What is the ruling on using an asthma pump [whilst fasting] due to trouble breathing?
It is apparent that it does not contain food or drink. Does it contain water O’ brothers? Does a person sense water or is water sprayed from it? So I don’t know if it would invalidate the fast.
