Asslamo Allaikum Wa Rahmatullahi Wa Barakatuh,
I had searched this matter for many years and failed to understand as to how using an inhaler breaks the fast. Modern day inhalers can be used with or without the spacers so there is very little chance that the medicine actually goes inside the stomach. We also know that Inhalers have no nutritional value as such, so does it break the fast?
Reviewing old Fatawa on the subject, many of them assumed that there is a danger that medication can actually go inside the stomach. This danger has been largely eliminated with Modern inhalers.
It turns out that it was my failure to understand the principles of Fiqh which led to years of confusion and research.

