My son had a flu, now its ok, but for the last 5-6 days he haves a stuffed nose. We clean it daily with saline solution, and after that we use the nasal aspirator, but after a couple of hours his nose its again stuffy, and he breathes true the mouth more. At first with the flu, he was taking liquid panadol, after that the doctor gave him some liquid antibiotic. So with the flu and medication he its done. But still haves a stuffed nose no mather what we do.