We are in the middle of allergy season here in Texas. The pollen is so bad this year we have layers of yellow pollen grains piling in the street and covering the cars. All this pollen is bringing on respiratory distress, coughing, and wheezing. Here is an old article I wrote last year on eHow.com. I hope you find it helpful.
How to Stop Coughing Brought on by Post Nasal Drip | eHow.com