I have a mild asthma myself but I have never had what could be called an asthma attack.Oh, sounds terrible. I never had an asthma attack from it, but being around it makes it hard for me to breathe.
My wife explains that it is like someone is holding a pillow over her face. There is simply little or no air available. In a serious attack immediately relief is a matter of life or death. Fortunately after many years of fighting it, her asthma, while not gone, is under control. She still has trouble with but has had no full blown attacks in several years now.
The solution initially was a heavy daily dose of steroid [Predizone] for more than 20 years. This opened the airways I guess but almost destroyed her natural immune system. This is her problem now. Her body is unable to fight off the innumerable sicknesses floating around these days. I won't detail what is happening now but... we move on trusting in God. Without Him, in spite of man's solutions, and helps she would have died long ago.