Coughing on inhalation may be caused by allergy, bronchitis, cough variant asthma and other factors. 1. Allergy: when allergic to certain substances in the inhaled air, the mast cells in the body may degranulate and release histamine, NO and other substances, thus causing congestion and edema of the mucous membrane of the respiratory tract, and the mucous membrane is stimulated, which may lead to coughing when inhaling. 2. Tracheitis: when inflammation occurs in the trachea, the wall of the trachea may be damaged, and when inhaling, under the stimulation of the airflow, it may lead to coughing on inhalation. 3. Cough variant asthma: In cough variant asthma, the reactivity of the airways may increase, and coughing may be triggered by the stimulation of cold air and odor. When the situation of wanting to cough on inhalation occurs, you should consult a doctor in time, under the guidance of the doctor’s examination, to clarify the cause of the disease, and active treatment.