At this time, it's uncertain whether or not model/actress Amber Smith has truly quit smoking or continues to smoke. It's very difficult to verify it for certain and Smith has not recently announced publicly that she has quit smoking for good.
She appears to have her own Twitter account that she posts to often and there are no recent updates talking about smoking or pictures posted of her smoking on her page. While it's not an officially verified Twitter account, from reading her updates it does seem to truly be her account.
Her Facebook account, also has no recent information or pictures related to her smoking or not smoking.
Some interesting facts about Amber Smith are that she has played Rita Hayworth in several movies, she was the first model for the 1990's Wonderbra campaign, and that her father Russ Smith played for 4 years as the running back for the San Diego Chargers of the NFL.
Amber Smith is best known for appearing in the Sports Illustrated Swimsuit Issue and for starring in the Cinemax TV series "Sin City Diaries". She's also had smaller roles in many films, notably L.A. Confidential, The Funeral, The Mirror Has Two Faces, and American Beauty. Her latest film White Mule wrapped up filming in 2012 and is now in post-production.