Try Stretching the Jaw. Some people are more sensitive to pressure changes in the air. Swelling inside the ear canal can cause a loss of hearing that may result in sounds breaking up in a crackling noise.
Deep Coughing: Start by taking a deep breath. Hold the breath for 2-3 seconds. Use your stomach muscles to forcefully expel the air. Avoid a hacking cough or merely clearing the throat. A deep cough is less tiring and more effective in clearing mucus out of the lungs.
Call a doctor if your cough 1  : Frequently brings up yellow or green mucus from the lungs and lasts longer than 2 days. 2  Occurs with a fever of 101Â°F (38.3Â°C) or higher and brings up yellow or green mucus from the lungs (not postnasal drainage). 3  Causes you to vomit a lot. 4  Continues longer than 4 weeks. But a cough in which the mucus is definitely coming from the lungs rather than the nasal passages is a more serious problem, and you should contact your doctor. 2  You have signs of the flu (high fever, severe muscle aches or headache, and mild respiratory symptoms). 3  For more information, see the topic Influenza.