Nami gave us hint about the Germa66 and she is afraid and shocked when she said that Germa66 is the make-believe mythical evil army.
The new 66 million beri bounty of Nami and introduction of germa66 are perfect timing, I do not believe that it’s only coincidence why Nami’s new bounty contains 66 and that make-believe mythical evil army also contains 66. I believe in One Piece Coincidence does not exist because Oda does a great preparations for Characters role for the plot of future stories.
What might Nami’s connection to Germa66?
Germa66 might be involved on attacking Nami’s hometown before with marines because it was not clear yet who attack Cocoyashi’s Village when Nami is still a kid or maybe Germa66 Killed Nami’s parents.
We might see a flashback of Brook past in the middle of Vinsmoke story because many things can connect Brook to Vinsmoke and Nami’s past in the story of Germa66 and their victims before and might be Nami’s family was one of the victim of Germa66.