As long as you are not saying that Claire is also a manifestation of Smokie. I still believe (at this point) that she is alive, tho possible "infected." My gut tells me she is NOT infected, as in really bad. I think that to Dogan, people are either with "the others" or infected.
Just like Danielle before, I think she was sane and not trustful of anyone. In Dogan's eyes Danielle wouldn't join them, so she is infected. Now she must fight the Others to survive, as they believe those not with them (infected) should be terminated. Apparently Cliare now falls into that same category.
I'm not so sure Claire is alive. Well, more specifically, Miles didn't seem too sure she's alive back in S4:
Sawyer: She's ok, she just got her bell rung.
Miles: I wouldn't be too sure about that....
Remember, the house she was in did get hit by a rocket. I suspect, much like Sayid, she died, but somehow became reanimated. I'm not sure Sayid's reanimation was really related to his swim in the spring waters, so I think whatever happened to Sayid may also have happened to Claire.
Also, no, I don't think Claire is a manifestation of Smokey, just that she's now allied with him. Reason being, we've never seen Smokey in smoke monster form and appearing as another person at the same time. In fact, the show seems to have gone to great lengths to show us he cannot appear as both at the same time - exhibit #1: when Ben goes to get judged in S5, "Locke" conveniently disappears until Smokey leaves, then Locke is back again... exhibit 2: last week's episode - Flocke vanishes, smokey shows up and beats up Brahm & The Vampirettes, then Flocke is back to reassure Ben as soon as Smokey leaves.