Conclusion

It is important to know that it is very healthy for you baby to have mucus in their nose, throat and mouth. As long as they are sleeping, breathing, and feeding well, then there’s is no need to worry. However, you should closely watch the color of the mucus. While clear mucu is good, you should contact your doctor if you notice any changes.
Reference:
[1] https://www.mayoclinic.org/diseases-conditions/asthma/symptoms-causes/syc-20369653
[2] https://www.nhs.uk/conditions/pneumonia/
[3] https://www.mayoclinic.org/diseases-conditions/bronchiolitis/symptoms-causes/syc-20351565
[4] https://www.mayoclinic.org/diseases-conditions/cystic-fibrosis/symptoms-causes/syc-20353700
[5] https://journal.chestnet.org/article/S0012-3692(09)60079-9/fulltext











