My Baby Has Bad Breath

toyBabies naturally smell nice, except when they have bad breath. Bad breath doesn’t often occur in babies. Do you ever wonder why? One reason is that babies have no teeth. Teeth harbor plaque which has harmful oral bacteria, food debris, and sugars. Babies also salivate a lot, which helps keep their mouth clean. Did you know that breast milk contains white blood cells that attack putrefying (odor causing) bacteria? Even so, sometimes babies do develop bad breath and this can happen for several reasons. Read on to find out why your baby might have bad breath.


There are several reasons babies might develop bad breath including infection, an object stuck in their nose, gastro-esophageal reflux, and tooth decay (when they are old enough to have teeth). Other reasons include:

Too much to eat: Babies may not be able to tell if they’ve eaten too much. If they do, their small stomachs can regurgitate the milk or food back into their esophagus causing bad breath.

Sugar: A diet high in sugar it can cause bad breath. Putrefying bacteria feed on sugars and produce a foul odor.

Bacteria: When your baby sucks on his or her toys they are covering them with bacteria. Eventually the toys develop a bad smell. After time passes and they reintroduce the same toy into their mouth the odor caused by the bacteria is also reintroduced into the baby’s mouth.

Stuffy nose: A stuffy nose due to a cold or allergies can also cause bad breath. If a person’s nose is plugged, they are forced to breathe through their mouth, drying out their oral tissues. A dry mouth is a breeding ground for odor-causing bacteria.


Dr. Bob Jing has served patients and their families across Dallas/Ft. Worth for many years. Together with his caring, compassionate, and highly-skilled team at 7 Day Dental, Dr. Jing is dedicated to making good dental health available to as many people as possible. To learn more, or to schedule a consultation or appointment, contact our office closest to you at 817-405-2001 on Jacksboro Highway, or at 817-405-0195 on Seminary Drive.