Sinuses are the open spaces inside the face and around the nose. Their job is to supply mucus to flush nasal passages clear. Sometimes they can become irritated and infected. This means pain. Sometimes this can be just for a few days to weeks, but other times it can linger for years. The sinuses are difficult to treat. After all, they are an internal part of the skull only accessible through the nose. There are some things we can do at home to make things better.