Gadgets to keep the doctor (or dentist) away.
A large tank lets this humidifier run for 24 hours on a single filling (and UV lights keep the water free of bacteria, fungi, and mold). Why a humidifer? Studies have found that keeping the humidity between 40% and 60% means fewer flu viruses in the air and on faucets, door handles, and other surfaces.
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Last updated July 22 2010: 3:42 PM ET