Adjective
vomeronasal (not comparable)
(anatomy) Of, pertaining to, or situated near the vomer bone between the nose and the mouth
Felids also have a highly developed sense of smell, although not to the degree seen in canids ; this is further supplemented by the presence of a vomeronasal organ in the roof of the mouth, allowing the animal to "taste" the air. Source: Internet
They smell by using their forked tongues to collect airborne particles, then passing them to the vomeronasal organ or Jacobson's organ in the mouth for examination. Source: Internet