Don't Bother Me, I'm Annoyed (SpongeBob DX)

In this episode, Squidward gets tortured by an unknown source. SpongeBob DX Episode 41

Episode
It starts with Squidward waking from bed. He goes in and takes a bath. He smells the air and notices something odd. Ok, who replaced my bath with ranch dressing? Squidward asks. Squidward then goes into his library, he takes out a book.