If your home has high concentrations of radon there are ways to reduce it to acceptable levels. Most radon problems can be fixed by a do-it-yourselfer for less than $500. If you want or require the assistance of a professional you may wish to look at the list of certified radon mitigators for your state.
Interestingly enough, one common cause of bloody mucus in nose areas is high blood pressure. While the blood vessels and the nose seem hardly related in any pertinent way, Kaiser Permanente points out that high blood pressure can cause nosebleeds, which can result in bloody mucus discharge. What can cause this is the perfect storm of adjacent occurrences.
Asthmatics (people suffering from asthma) often complain of thick and viscous mucus. This is because when you have asthma; excess mucus is produced, blocking the airways. This causes breathing to become difficult as your airways become clogged due to the decrease in mucus drainage. Mucus is functional in coating the organ membranes, preventing pollutants from invading and irritating the organs.