The most common and most likely answer to this crossword clue is the 8 letter word ATOMISED
I've seen this crossword clue in The Times
A
T
O
M
I
S
E
D
More clues leading to the result ATOMISED
Buddy explains!

The straight part
We know that "Like fine spray" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case like fine spray = atomised.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ATOMISED mean?
ATOMISED verb- To separate or reduce into atoms
- To make into a fine spray
- To fragment, break into small pieces or concepts
- To bomb with nuclear weapons