Answered by Shaykh Faraz Rabbani
if a person is ashmatic and he wants to fast which he intentially does but he has to use his inhaler so his fasts breaks is this gunna?
In the Name of Allah, Most Merciful and Compassionate.
Walaikum assalam wa rahmatullah,
If one has a genuine need for an asthma pump that cannot be otherwise fulfilled, then it would be permitted without dislike to use an inhaler. However, it would invalidate the fast and require that the fast be made up later. This is because anything that has a perceptible body breaks the fast if it enters the body through a normal channel. [Shurunbulali, Maraqi al-Falah; Rafi Usmani, Dabit al-Muftirat]
And Allah alone gives success.
Wassalam,
Faraz Rabbani