My baby also have the same problem but she has some 鼻屎. You can make some 鹽水 and then use the 棉花棒 to drop 2 to 5 drop to your baby nose. The 鹽水 will clear it out or make the 鼻屎 become soft. However maybe you need to do this few times. Or maybe you can go to pharmacy to get some drop for blocking nose.