Hello sir,Air humidifier is a device that helps create a healthier environment indoors by increasing the moisture content in the air. Dry air, especially during winter months, can have negative effects on the skin, respiratory tract, and overall health. Dry air can trigger nasal congestion, sore throat, coughing, and other respiratory discomforts. Humidifiers can alleviate such problems by increasing the humidity in the air, helping to soothe the respiratory tract, especially during colds or allergies. In addition to these, it improves the quality of your sleep, sir.