Your question is not very clear, but it seems that you are talking about nasal polyps. Polyps themselves are abnormal growths on the lining of the nose, and the issue is not really swelling of the polyps but their existence itself. There is not much that can be done to treat nasal polyps by way of home remedies. It might however be reassuring to know that these growths are benign, non cancerous ones.
In some cases however, the polyps can get swollen, complicating the problem. If this is the case with you, you should probably visit a doctor and get them examined. Even if there is no swelling, in some cases, surgery is needed to remove nasal polyps. Sometimes surgery is not required, but there is no option other than to use steroid based drugs. You will need to discuss this with your doctor. There are over the counter nasal sprays available, but it is best not to use steroids without medical supervision.
Since it thought that nasal polyps may be caused by continuous irritation of the mucus membrane due to allergies, you can try to avoid things and situations that you know you are allergic to. If you smoke, you should stop, as this will only aggravate the polyps and the nasal blockage.
answered by G R