in the air
in the air {adv. phr.}
1. In everyone's thoughts.
Christmas was in the air for weeks before.
The war filled people's thoughts every day; it was in the air.
Compare: IN THE WIND.
2. Meeting the bodily senses; surrounding you so as to be smelled or felt.
Spring is in the air.
Rain is in the air.
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Source: A Dictionary of American Idioms