Are all nasal sprays the same? Should you breathe in when using it? How many types of nasal sprays are there? What should you do when using nasal spray for the first time? How should you position your hand? Can these be used to get rid of blocked nose? Dr Sow Yih Liang, an Ear, Nose, Throat, Head & Neck Surgeon, demonstrates how it's done, step-by-step!