Look up LUNG herbs, buy in bulk and make the tea yourself. Its fresh and saves money. Boiling some water + garlic and breathing it in helps to break mucous up and open passage ways. Or boiling water with Food grade Hydrogen Peroxide and breathing that in kills stuff. (By boil I just mean enuff to get vapors- please don't burn yourself.) Colloidal Silver , like the previos postsays, is always good for a cold too. Mullien is an herb off the top of my head, there is another that sounds like Osha that is good specifically for bronci, bronchioles, and lung tissue . You'll have to double check the names.
Clean your colon, any toxins or bad bacterias in colon go to the lung. They are on the same meridian. (start with a water enema today.)
Know your dosha? You may be part Vata because they have "wind" which effects bronchi, lung, and colon. Kapha have more of a problem with mucous. You'll have to do a little questionaire on-line to see which is you. Just stay away from foods not prescribed to your dosha(Ayurvedic word for body type) and your condition will decrease. You'll notice a difference. Its amazing how diet can imbalance your body. You probably like the foods in your dosha instinctively already, but never knew how right you were.

Good Luck,
Hope it helps,
Gracey