So pretty much, people have made a big mistake as to whether Shikamaru smoked in the English Manga. Some say he did, some say he didn't. I can prove that he did in the manga. See chapter 328... See the last few pages of chapter 328 through a lot of 330...
Here is a link showing proof in the English manga that he did smoke.
Habit Begins at This page: <snip - no links>
This habit is noted to continue through chapter 330 page 11 when it is first shown, and is known to continue up until chapter 342. Up until the second page of chapter 342.
Habit Ends at This page: <snip - no links>
This should clear up a confusion.
Note that the author who wrote Shikamaru Nara's page did make this mistake.