It's nice to say "I'm not giving up diving", but you may have to choose between diving and death. In death, for the next billion years you can dream about diving.
The bright side is, I am not convinced you have to make that choice.
Let's forget about terms such as "asthma", for a moment.
You are experiencing sudden onset shortness of breath, which grows worse (you haven't experienced where it may go) and it is relieved by albuterol sulfate.