The Clairu humidifier is known for improving indoor air quality, but users should be aware of potential side effects. Some individuals may experience respiratory issues or allergies triggered by improper humidifier use. It's essential to maintain the device regularly to minimize these risks.

Another common side effect associated with Clairu humidifiers is the growth of mold or bacteria if the water tank is not cleaned frequently. This can lead to further health complications, particularly for those with pre-existing respiratory conditions. Always ensure that the humidifier is dried and cleaned according to the manufacturer's guidelines.

Lastly, excessive humidity can lead to condensation and mold growth in your living environment. It's important to monitor humidity levels and adjust the settings accordingly to ensure a healthy balance. Proper usage can help you avoid these side effects and enjoy the benefits of your Clairu humidifier.