In some Naruto fanfictions, Anko might be depicted as cheating on Naruto, but this is not part of the original Naruto storyline. Fanfiction allows for a lot of creative and often non - canon interpretations of characters' relationships.
In some Naruto fanfictions, Naruto might faint due to overusing his chakra. For example, if he pushes himself too hard in a battle, like when he tries to use a new and extremely powerful jutsu without fully mastering it. His body can't handle the excessive chakra drain, and he faints as a result.
Well, it depends on the specific fanfiction. There are countless fanfictions out there, and while the Naruto we know from the original series doesn't smoke, some fanfic writers may choose to deviate from the canon and have him smoke as part of a character arc they've created. For example, they might use it as a sign of stress or a new rebellious phase in Naruto's life.
Yes, Naruto has a vast amount of fanfiction. Fanfiction is a popular form of creative writing among Naruto fans. Writers use the existing Naruto universe, its characters like Naruto, Sasuke, Sakura, etc., and create their own stories. These can range from alternate universe scenarios, where the characters have different backstories or relationships, to filling in gaps in the original story. For example, some fanfictions might explore what would have happened if certain characters had made different choices during key moments in the series.
In certain Naruto fanfics, the authors might give Naruto the habit of smoking to show his more grown - up or rebellious side. It could be part of a darker or more mature interpretation of his character. But it's important to note that this is not in line with the canonical Naruto we know from the anime and manga, which focuses on his ninja skills, his journey to become Hokage, and his relationships with his friends.