What might affect drunk member I sponsored to get smashed? (10)

I believe the answer is:

droopiness

I'm a little stuck... Click here to teach me more about this clue!

'get smashed?' is the definition.
I can't judge whether this definition defines the answer.

'what might affect drunk member i sponsored' is the wordplay.
'i sponsored' anagrams to 'DROOPINESS'.
But, I'm not sure how the anagram is indicated.

'to' acts as a link.

Can you help me to learn more?

(Another definition for droopiness that I've seen is " sign of fatigue".)

I've seen this clue in The Independent.

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