In conversation, agrees bloke exudes charm (8)
I believe the answer is:
talisman
'charm' is the definition.
(talisman is a kind of charm)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for talisman that I've seen before include "Magically protective object" , "Object believed to protect wearer" , "Liam, Stan has charm." , "It's said to be a protection against evil" , "Object with magical power" .)