How to moisten dry indoor air and will not make you and your family sick? When indoor air is dry in winter,the humidifier can complement the needed moisture.It can help alleviate the discomfort of dry nose, throat, lips and/or skin, hen the air indoors dries out in winter, a humidifier can add much-needed moisture to help relieve the discomfort of a dry nose, throat, lips and/or skin and can also reduce or prevent household problems such as static electricity, cracks in furniture and peeling wallpaper.