Not only can a whole-home humidifier help alleviate symptoms of the flu, it can actually prevent the spread of the influenza virus. In a study by the National Academy of Sciences, a strong correlation between dry condidtions and the transmission and survival of the virus was found.
Researchers discovered tthat when the absolute humidity level in the air was too low, the flu virus survived longer and was transmitted more easily. So, by increasing the level of humidity throughout your home, you can provide optimum conditions for a healthy environment.