The Blueair InvisibleMist Humidifier couldn’t have come at a better time for UK customers, as the pollen count is high at the moment.

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We’ve also looked at portability. You don’t want to attempt storing a large air cooler away in the autumn if you don’t have the room. Some are designed to be placed on a desk or bedside ...

Change the water in the humidifier regularly. Clean the humidifier regularly. Change any filters as the manufacturer recommends. Use only distilled or purified water that does not contain minerals.

Background Over a few months in the spring of 2011, a cluster of patients with severe respiratory distress were admitted to our intensive care unit (ICU). Household clustering was also observed.