What does it mean when the goo coming out of my baby's nose is thick green?
Infection or object
During a viral respiratory infection, a baby's runny nose will often turn thick and colored for a couple of days before changing back to clear. If thick, green mucus is running for more than a few days in the middle of a cold, your baby may have streptococcosis, caused by the strep germ or your baby may have a sinus infection.
If there is a stench, your baby stuck something in her nose.