Sinus/Bronchitis contagious?

If the sinus cavities and bronchial tubes are infected from allergies, no it would not be contagious. This may sound nasty, but do you know the color of the mucus from her cough and her nose? If it's green, it's a bacterial infection. Is she a smoker? That can lead to a chronic bronchitis and does make you cough a lot. It might be hard to identify if she has a virus that would be contagious. Can you call the doctor that saw her about your concerns? That's probably the only way you'll get a definant answer on her condition.