I ran the Chicago Marathon in October, and by late November was having exercise
-induced asthma, burning lungs, burning throat
, and tightness in my chest. Inhalers all but solved the asthma component. But the burning still persists. I too had a barium test, which proved negative for GERD. My voice is often very hoarse. I have tons of post nasal drip, often tinged with blood. Also, I frequently have sinus headaches.