Patrick
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        Three times over the last 12 years I have had a chronic cough. The first developed after a trip to LA.  The motel we stayed in had an old air-conditioner in it.  The cough lasted about 6 months.  4 years later we had a trip to Europe. The airconditioning in the bus we travelled on for 21 days affected me. After 12 or so days a cough developed and lasted 4-5 months.    I have the cough again now.  It could be related to the airconditioning at work.  The cough is non productive. This time it is a croup type cough.    Has anyone had these problems.  Any remedies anyone knows of?