The scent liquid can be replaced. However, self-refilling is not supported. To ensure optimal performance, it is recommended to use only the compatible scent liquids available through official Xiaomi channels. Using non-official scent liquids can risk causing device malfunctions or clogging, and any damage resulting from such use is not covered under warranty.
Note:
The Xiaomi Smart Scent Diffuser does not support inverted installation. Please avoid laying the device flat or tilting it, as this can cause scent liquid to leak.