"Sniffers" is a word that can refer to a variety of things, from devices used to detect and analyze networks and traffic, to dogs specially trained to detect certain scents like drugs, explosives, or missing persons. Some possible synonyms for "sniffers" could include "detectors," "scanners," "sensors," "nose," "hound," "detector dogs," "smell traps," "smell detectors," "scent sniffers," or "tracking dogs." Each of these terms has a slightly different connotation or application, but they all share the idea of using heightened olfactory senses to detect and identify targets. Whether in the realm of technology or animals, "sniffers" play an important role in detecting and identifying hidden or dangerous substances or individuals.