Describe Odysseus's appearance in detail after Athena transform him. Why must he appear appalling. In book 4 what story told about Odysseus foretold his disguise

This quote from Book 13 pretty much sums up how he looked,

"She wrinkled the fair skin on his supple limbs

and took the dark hair from his head. His arms and legs

she covered with an old man's ancient flesh and dimmed

his eyes, which had been so beautiful before.

She dressed him in different clothes—a ragged cloak,

a dirty tunic, ripped and disheveled, stained

with stinking smoke. Then she threw around him

a large hairless hide from a swift deer and gave him

a staff and a tattered leather pouch, full of holes

and with a twisted strap. "

In Book 4 Helen drugs the men's wine and tells funny stories like when Odysseus disguised himself as Trojan beggar to obtain information from the Trojans.