in the wind. figurative. So as to be ‘scented’ or perceived (or so as to ‘scent’ or perceive something); to have in the wind, to ‘scent’, to…

in search of: so as to look for, in order to find, in pursuit of. Frequently used predicatively: looking for, trying to find.

on (also †upon) the look: engaged in searching for something; keeping watch. Cf. on (also upon) the lookout at lookout, n. phrases 2.