4 doctors weighed in:

Why does baby spit up smell like sour milk?

4 doctors weighed in
Dr. Keegan Duchicela
Family Medicine
3 doctors agree

In brief: Gotta love babies.

Like so many other adorable things babies produce, that sour milk smell is just the normal smell of baby spitup.
It's partially digested food/formula/milk mixed with your baby's stomach acid. It doesn't mean the food is going bad.

In brief: Gotta love babies.

Like so many other adorable things babies produce, that sour milk smell is just the normal smell of baby spitup.
It's partially digested food/formula/milk mixed with your baby's stomach acid. It doesn't mean the food is going bad.
Dr. Keegan Duchicela
Dr. Keegan Duchicela
Thank
Get help from a real doctor now
Dr. Cindy Juster
Board Certified, Pediatrics
33 years in practice
2M people helped
Continue
108,000 doctors available
Read more answers from doctors