Last function, Australia’s host; creates disgust (6)

I believe the answer is:

nausea

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'disgust' is the definition.
(nausea is a kind of disgust)

'last function australia's host' is the wordplay.
'last' says to take the final letters.
'australia's' becomes 'aus'.
'host' becomes 'ea' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
The last letter of 'function' is 'n'.
'n'+'aus'+'ea'='NAUSEA'

'creates' acts as a link.

Can you help me to learn more?

(Other definitions for nausea that I've seen before include "Sickness, biliousness" , "Queasy feeling" , "Sick feeling" , "Feeling of revulsion" , "Unpleasant feeling" .)

I've seen this clue in The Hindu.

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