Fig. to be ready for a fight; to be ready to attack; to be ready to act. (Like sharks, which are sent into a frenzy by the smell of blood.) Lefty was surrounded, and you could tell that the guys from the other gang smelled blood. The lawyer heard the crash and came running—smelling blood and bucks.
to recognise an opportunity to be more successful, especially by taking advantage or someone who is in a difficult situation Environmental groups smell blood, and are increasing their campaign against the airport.
tv. to be ready for a fight; to be ready to attack; to be ready to act. (Like sharks, which are sent into a frenzy by the smell of blood.) Lefty was surrounded, and you could tell that the guys from the other gang smelled blood.