Respiratory and infections, such as cold or flu, can cause inflammation and narrowing of the air passages in the lungs. The narrowing of the airways can obstruct airflow in and out of the lungs, creating a shortness of breath. This shortness of breath can trigger asthma attacks.

There are certain warning signs of infections that can trigger asthma, such as chronic coughing with increased mucus production, high temperatures, shortness of breath, wheezing, fatigue or weakness, scratchy or sore throat, nasal congestion, sinus drainage, headaches or pain in certain areas of the face.

Preventing infections that can trigger asthma attacks require maintaining a certain level of personal hygiene. Respiratory infections are viral infections that can spread throughout the family, and thus it is important to keep hands clean. Also taking flu shots, or pneumonia vaccines can prevent certain infections from affecting. Sinus infection, also known as inflammatory infection, can also be serious when symptoms appear in asthma-prone people. Keeping breathing equipment of asthmatic patients, such as asthma inhaler, or asthma nebulizer, clean can also help to prevent infections from attacking.

If one has respiratory infections and is showing signs of developing asthma, it is advised to consult the doctor immediately.