Providing a Lightness

The air seems to be relieved of less stench!
Have the 'rats' been supplied with stronger deodorant?

'No!
For some reason they have been jumping overboard...
And the ship is being steered in a new direction!
A fresh case of vodka
Has been located to occupy the captain!
And we have been freed to continue this journey,
Without his pets he has reluctantly dismissed it seems.
Providing a lightness to the cargo once heavily carried.'