Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to recognize asthma [title] Notice any unusual coughing. [step] Coughing is one of the most common symptoms of asthma. If you cough frequently, even when you're not sick with a cold or flu, you may have asthma.

Ending1: Coughing may also be accompanied by a very strong, foul-smelling smell. [substeps] If you have a strong but very sour feeling to your cough, that may indicate asthma. Ending2: Take note of your coughing throughout the day and mark when it tends to occur. [substeps] With asthma, coughing tends to occur often at night. Ending3: If you experience a sudden chest tightness, abdominal pain, or shortness of breath, you may have asthma. Likewise, feel for any unusual symptoms when you go to the bathroom or change diapers. Ending4: Notice whether you cough as much or frequently, or if you cough more than usual. [substeps] Coughing is how mucus runs out of your nose from your airways.

Answer format: ending1/ending2/ending3/ending4