Home treatment of nasal congestion Difficulty breathing through your nose, which means you probably snore at night time and wake up with a dry mouth in the morning. You may also have a runny nose, frequent headaches and a persistent cough caused by excess mucus at the back of your throat. All of‘ these symptoms can then lead to an infection, which is characterised by facial pain, a raised temperature and thick, green discharge from the nose. A cold or flu can produce excess mucus, which can lead to the area around the nose becoming swollen, causing congestion. You may also have polyps ibenign lumps) inside the nose that cause blockages arid prevent nasal fluids draining properly. Try an at-home steam by sprinkling a few drops of Olbas oil into a bowl of warm water, coveringyour head with a towel and inhaling for a few minutes twice a day. This should open up the breathing passages. Decongestant sprays from your chemist can help, too.