The LEVOIT Ultrasonic Humidifier is the best humidifier for stuffy nose. It is a cool and warm mist that helps take care of both the bacteria and your runny nose and also keeps your skin hydrated.
It is very quiet and the display off feature does not disturb you at night. It has in built sensor gauges that maintain and adjust humidity levels. It shuts off automatically when the tank runs out of water.
It is perfect for a large room and can hold up to 6 litres and can work up to 36 hours of continuous hours on a low mist level. It also has a remote control which allows you to not get up from bed and adjust accordingly.