Quote Originally Posted by sirrahbed
I am not sure the face you are asking about husky-mom The only smooching that happens here is when *I* am the smoocher

Does the kitty close its eyes when he does this? That is what I call a kitty kiss.

Also, when they are smelling something carefully, they sort of tighten their muzzle and open their mouth a bit - is this it?

That is all I can really think of.
That is called "Flehmening." Cats have a Jacobson's organ in their mouth, it lets them not only identify a smell, but also determine how long ago it was made.

Jacobson's Organ and the Flehman Response
Cats (along with snakes and a few other mammals) have a magnificent organ called the vomeronasal organ, most oftenly known as the Jacobson's Organ. It is located inside the mouth, just behind the front teeth, and connects to the nasal cavity. Opening his mouth slightly enables the Jacobson's Organ to open up the ducts connecting to the nasal cavity. The appearance of the cat as he brings air into the Jacobson's Organ has sometimes been likened to a "smile," other times to a grimace. The Jacobson's Organ seems to play a large part in the sense of smell of a cat, judging by its frequency of use around my house.

According to Valeriy ILYICHEV, Doctor of Biology, in this article, there are three hypotheses on the exact function of the Jacobson's Organ. The first is to perceive the smell of food; the second, as a "sixth sense" to help predict unusual occurrences, e.g., earthquake, volcanic eruption; and the third is for perception of sexual odors - pheromones. If I got a vote, I'd choose all three, judging by the behavior of my own cats.

http://cats.about.com/cs/felineanato...nose_scent.htm