Crossword Genius

Central air-conditioners blowing to let out nasty A&E ‘odor’ (9)

Ross

I believe the answer is:

intrinsic

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

'central' is the definition.
(thesaurus)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for intrinsic that I've seen before include "Natural" , "Naturally belonging" , "Genuine" , "native?" , "Belonging by its very nature" .)

I've seen this clue in The Hindu.
Want a hint initially instead of a full solution? Install my app