Well, a smut novel refers to a book where the focus is heavily on sexual themes and often has very detailed and graphic descriptions of sexual acts. It's not for everyone and is usually considered more adult-oriented.
Agent 8 and Agent 3 fanfics can be really diverse. In some, they might be portrayed as best friends, while in others, there could be a more mentor - mentee relationship. One great thing about these fanfics is that they can add more depth to the characters that we might not see in the original source. For example, a fanfic could explore Agent 8's adjustment to a new environment with Agent 3's help.
Well, it depends. If it's just an occasional read for entertainment and the person can clearly distinguish between fantasy in the novels and real - life values, it might not be too harmful. But if it starts influencing one's behavior or attitudes towards others in a negative way, then it's not healthy. For example, some smut novels may promote objectification of people, which is not a good value to uphold.
There is a wide range of fanfics out there, and while some people might be interested in the so - called 'bella smut fanfics', many others prefer more positive and clean - cut stories. The popularity of such adult - themed fanfics is likely limited due to ethical and moral concerns among a large part of the fan community. Also, most official platforms have rules against overly sexual content.
I'm not entirely sure what 'crickey smut fanfic' specifically is. 'Crickey' is an exclamation in some English - speaking regions. But'smut fanfic' usually refers to fan - created fictional stories that contain sexually explicit content. However, this kind of content is not appropriate or acceptable in many contexts.