How to Flu-Proof Your Home

Some scientists believe an increase in humidity can make it harder for viruses to thrive and multiply, and using a humidifier can help create this inhospitable environment for the flu.

But be careful; humidifiers can breed bacteria. Individual units must be cleaned regularly, and a whole house system serviced yearly—preferably when it's deactivated in the warmer months, says Barney Burroughs, President of Building Wellness Consultancy and former president of The American Society of Heating, Refrigerating and Air Conditioning Engineers.

Honeywell TrueSTEAM Humidification System, about $550 to $900

Find out more from Health.com about how humidifiers can help beat the flu.