Product review (1 stars): BEWARE !!! Using humidifier disinfectant in ultrasonic humidifier could cause DEATH.
Please beware and research more before buy these types of product (humidifier disinfectant, or humidifier water treatment ).
Using humidifier disinfectant could cause acute severe lung disease, and in some cases could lead to the death.
These products made of harmful chemical, and if the chemicals evaporate to the air, you will directly inhale them.

It is still under investigation
please see the news below.

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