Past 2 days, blocked runny nose. But only leaking and blocking one side (right side) air comes out only left side. Worried I have CSF leak or a cold?

Uri. A viral upper respiratory tract infection or a nasal polyp may be the cause of your blocked nasal passage. These infections last about 1 week. Try irrigations with warm salt water and/or a nasal decongestant spray at this time. If blockage persists, get an examination by your physician or an Otolaryngologist for evaluation.