Crossword Genius

Short drink after spraying grime disinfectant? (9)

Ross

I believe the answer is:

germicide

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

'disinfectant?' is the definition.
(synonyms)

'short drink after spraying grime' is the wordplay.
I cannot really see how this works, but
an anagram of 'grime' is 'germi' which is within the answer.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for germicide that I've seen before include "antiseptic" , "Agent that destroys disease-carrying microorganisms" , "Substance destroying harmful microorganisms" , "Disinfectant" .)

I've seen this clue in The Hindu.
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