Name an insect which use antennae to smell.

Moths and butterflies both have antennas on their heads. These aid in their equilibrium, particularly when they are flying, and allow them to take in the smells of their surroundings. Two segmented antennae make up a butterfly's two antennae. A little club is located at the end of each butterfly antenna. Moths do not, however, possess these little clubs on their antennae. The antennae of butterflies are incredibly smart. They can also assist in finding their pals, telling the time, and navigating. Together with their antennas, the sensors on their feet enable them to discover food, mate, migrate, and sleep.
Their ability to smell is crucial. They will be able to locate flowers that have plenty of nectar for them to consume.