Andrea is a living air filter that absorbs toxic gasses from air, contaminated indoor air.

I'm going to check the air filter down there.

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Air ducts open.

Open all air ducts.

That's a 10x10 room, jerry, with an air filter designed for three people.

I was in the open air.

We spent the day in the open air.

Open the window and you'll have fresh air.

The air is bad here. Will you open the window?

The planes are in the open air and are deteriorating.

Extractor hoods are used to filter out gasses from chemical reactions. The air, once cleaned, is pumped outside of the building.

And leave the door open to let in a little fresh air.

Parts of the United Kingdom nuclear weapons complex use high volume air samplers, which employ a filter to collect and monitor particulate emissions.

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Phillip, you'll feel much better once you get out in the open air.

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Here you can enter a name filter to limit which files are displayed. To clear the filter, toggle off the filter button to the left. To reapply the last filter used, toggle on the filter button.

Here you can enter a name filter to limit which files are displayed. To clear the filter, toggle off the filter button to the left. To reapply the last filter used, toggle on the filter button.

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