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.
Mucus (sputum) is made in your lungs. Mucolytics are medicines that make the mucus (sputum) less thick and sticky and easier to cough up. They are usually prescribed for people who have a chronic (long-term) cough. They work best if they are taken regularly. Mucus (sputum) is made in your lungs.