Catch a Scent of is a phrase that refers to the ability to DETECT a smell. It is often used to describe someone's ability to pick up on subtle aromas, such as those of food or flowers. The term can also be used to describe the ability to DETECT danger or other unpleasant odors. The crossword solution for this phrase is 'DETECT, ' which is a six-letter word meaning to recognize or discover something through the senses.