Have you tried nebulizing with colloidal silver and lobelia (and perhaps a drop or so of iodine and even a drop of so of mullein)?  5cc of colloidal silver and 1 cc of lobelia extract - and try combining it with the Chinese Herbal formula ClearLungs Ultra. You can get the Nebulizer Kit complete with both ionic and colloidal silver at CZ aponsor Utopia Silver (and use the discount code of LR001 to get 15% off).  They also carry the lobelia (Dr. Chrisopher's formula) and the ClearLungs, subject to the same discount.  Ask Luella May, Trapper or Grz about the nebulizer.  I personally vouch for it too.

The kit and supplies are pretty portable too. You can't go round wearing it, but it is very compact and easy to carry with you to use as needed.

BTW, there is also a product which is aptly named OxyGen, and each capsule contains the equivalent of 12 drops of 35% food grade H202.  I cannot say what it might do for you, but it makes a noticeable boost in energy when I take it.

All the best,

DQ

A completely unrelated therapy that seems to have worked for many is Oil Pulling. Lots of people in this forum and other websites have reported getting relief from asthmas.

see this site for more information http://www.oilpulling.org