After this gag yeah Sanjis clearly getting it.
I'm still 50/50 on this tbh simply coz I'm still not sure what route Oda's ultimately going to be taking with Sanji.
PoL is still a mystery and given how ridiculous that ability is, I think it has the potential to also be a counter to immortality.
Imo if Sanji doesn't get CoC it'd be because Oda already has a specific unique route in mind to develop him strength wise.
CoC on top of whatever that is, could very well be a bit too OP.
That said on the gag, if it even is one.
I don't know but it feels a bit weird to me for Sanji to say something like this umprompted as he's not really a pompous character?
I'd get it if it was on some bickering ting with Zoro or something but just feels a bit off to me personally.
So either he somehow feels something within himself or Oda's forcing a gag here for whatever reason?
Contrast btw Sanji and Zoro here is also pretty interesting in the case that it's not necessarily a gag.
One can feel it manifesting within himself and the other doesn't even realize that he's manifested it.