We get people in our clinic that treat themselves. Look up Albuterol in the PDR or Google search it. I have given that drug to lots of patients. It is not without risk. I dont know you or your history but self treating with albuterol is not smart for what your trying to do.
If you have a doc or a clinic, and if they can take a listen, they might be able to tell you if your are getting your co (asthma?) back from childhood or if you are clear as a bell. If you are getting clogged up with tarballs that is one thing, if you feel that your tight, that is another. Because of where I work I have to say I am not giving you medical advice.
Good luck and take good care.