I hav talking induced dry cough that last for several weeks after exposure to cold air,air condition& after influenza infection.any help about reasons?

Reactive airways: Hello Tarek, Sometimes after a severe respiratory infection, the cough can linger for a few months. The airways can become inflamed and spasm. Certain triggers can cause this to occur including excessive talking, laughing and cold air. If it persists beyond a couple of months, you should see your local doctor to ensure that there is not another reason for the cough. Pamela Svendsen, MD