Open the windows to air out the room.
air out
idiomTo expose to air; to leave open or spread out, as to allow odor or moisture to dissipate.
I need to air out my sleeping bag before I pack it away for the winter.
After the long winter, she opened every window in the house to air out the musty rooms and welcome the spring breeze.
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air one's dirty laundry in public
To reveal one's sordid secrets to the public.
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air one's dirty linen in public
Synonym of air one's dirty laundry in public.
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air rage
Aggressive, disruptive behaviour on an aircraft.
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air sandwich
A strategy that has high-level direction and low-level operations, but little in the middle.
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blow hot air
To engage in empty or exaggerated talk that lacks substance, credibility, or truth; to bluster.
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breath of fresh air
Something relieving, refreshing, or new.
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build castles in the air
To have any desire, idea, or plan that is unlikely to be realized; to imagine visionary projects or schemes; to have an idle fancy or a pipe dream; to daydream.
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castle in the air
A desire, idea, or plan that is unlikely to ever be realized; a visionary project or scheme; a daydream, an idle fancy, a near impossibility.