A member asked:

My 8 week old started having very smelly farts and large poops that fill her whole diaper. still mustard yellow. why so smelly now?? formula & bf

5 doctors weighed in across 2 answers

Normal: If poops are same consistency, not loose, no blood and child is happy probably no issue. The smell may be related to what you are eating and what is in the breastmilk.

Answered 2/25/2015

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Gut bacteria: Babies swallow air when they eat and have germs in their intestine.The intestinal germs include whatever they suck off their fingers that survives the stomach acid.These germs live off the undigested material in the gut & produce a variety of gasses during that process.Swallowed air plus gut gas produces stinky farts.Sometimes adding probiotics to their feeds can change but not eliminate the odor

Answered 11/28/2017

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