If a newborn baby has a booger, it is recommended not to clean it out if it does not affect the child’s breathing. If your child has a stuffy nose, you can use the following methods to clean up the boogers: 1. Simply moisten the boogers with water using a cotton swab and then gently clean them out. 2. You can use water vapor, such as a cup of hot water, to be inhaled into the child’s nasal cavity, and then gently remove the boogers with a cotton swab after they have softened slightly. 3. 4.You can use a nasal aspirator, however, parents usually do not apply it particularly well.