Teething is a challenging time for babies, and it can also be tricky for parents. Beyond the usual symptoms like drooling and red cheeks, there’s another change you might not expect: the baby’s urine can develop a more acidic smell. But what causes this, how does it manifest, and how does it affect diapering routines? Here’s what you need to know.
Why does urine change during teething?
A stronger or slightly sour smell in a baby’s urine during teething is not directly caused by the teeth coming in. Instead, it is usually due to indirect factors: babies may drink less, be fussier, or have mild temperature changes, which can make the urine more concentrated and therefore smell stronger. Dietary changes, such as starting solid foods, can also affect the smell and composition of the urine. There is no scientific evidence linking increased saliva production or “acid formation” from teething to urine odor. Note that the change is usually temporary but can lead to skin irritation and disruption of the digestive system.
How does this affect changing intervals?
The more acidic urine can irritate the skin, particularly when left in contact for too long. If the baby’s skin is exposed to urine for extended periods, it may develop redness, rashes, or even diaper dermatitis. This makes more frequent nappy changes essential during the teething phase to keep the baby comfortable and avoid skin problems. Frequent diapering helps reduce the risk of irritation or discomfort.

Tips for handling wool nappies during this time
If you’re using wool nappies for your baby, it’s important to care for them properly during the teething phase to prevent odors and skin irritation.
- More frequent diaper changes: Given the change in urine composition during teething, make sure to change your baby’s nappy more often. Even if the nappy doesn’t seem fully wet, it’s best to change it regularly to avoid prolonged contact with acidic urine.
- Thorough cleaning with olive soap: Wool nappies should be washed regularly but carefully. Use a mild, natural detergent like olive soap to clean the wool. This helps remove the urine and salts that can build up without damaging the delicate wool fibers. Be sure to wash the wool nappies after each use, especially during this phase.
- Ventilate and care for wool nappies: Wool doesn’t need to be washed after every use, but it should be aired out properly between uses. Allow it to dry thoroughly to minimize odors and keep it in good condition. Wool has natural antimicrobial properties that help reduce odor, but airing the cover after use will keep it fresh.
Conclusion
During teething, your baby’s urine may change and develop a more acidic smell. To prevent skin irritation, it’s important to change nappies more frequently and clean wool covers thoroughly with olive soap. By taking these extra steps, you’ll ensure your baby remains comfortable and happy throughout this challenging time, while also keeping your wool covers in good shape.


