There are “Wretched” smells coming from the deck. How does this embody the events and emotions of the characters?

Mutiny is a wretched thing when the men are as evil as Long John Silver and the mutineers. THe smell personifies the moral character of these pirates.

Mutiny is a wretched thing and all of the men are evil and wretched. That smell personifies cruelty and mutiny.