A love for Ancient Rome reflected peculiar charm (5)

I believe the answer is:

aroma

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'charm' is the definition.
(I have seen 'particular charm' mean 'aroma' so perhaps 'charm' could also mean 'aroma')

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for aroma that I've seen before include "A pleasant smell as of food" , "Nose" , "Test of knowledge" , "Scent - fragrance" , "Pervasive quality" .)

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