something in the wind - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A secret plan or undertaking, as in I think there's something in the wind for Mom and Dad's anniversary. This expression alludes to the carrying of a scent by the wind. [First half of 1500s]