AmmoniaChlorineMineralsVegetable dustsPoorly functioning immune systemSymptomsAcute bronchitis may cause:Cough, with or without sputumIncreased sputum productionTrouble breathingWheezingYou may also have other cold or flu symptoms such as slight fever, sore throat, and nasal congestion.DiagnosisYour doctor will ask you about your symptoms and medical history.