cat smells

Why my cat smells things and opens his mouth?

i have a cat, he smells the tv unit and the sweeping brush and he opens his mouth.. that’s wierd.. anybody knows why?

It is called Flehman…even big cats do this. More info below:

The Flehman Response

All felines have a special organ at the top of their mouth called the vomeronasal or Jacobson’s Organ. That “James Cagney” look you sometimes see on your cat when his upper lip lifts and his nostrils twitch is called the Flehman Response, or just plain Flehman and he’s using his Jacobson’s Organ to sniff out something: a potential mate (a female in oestrus), a strange cat in his territory, or an unusual odor. (Cats aren’t the only animals with a Jacobson’s Organ. They’re also found in snakes and some bats, as well as other mammals.)