If in a dream you suffer from cough, then it speaks about bad condition of your health. However, having changed a way of life, you can easily help yourself. If dreamed you that you hear how others cough, then you should communicate with the people who are not causing your sympathy.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.