Come on, man.
There's literally zero chance of Sanji actually having this.
I mean, look at the guy. His backstory and childhood was tragic as hell, and so if he had CoC, he would've literally shown it then. And even if he didn't, WCI was the perfect setup for Sanji to show he had CoC, given the impact it would've had on Judge. But nope, nothing. Sanji didn't show anything.
There's literally a greater chance of fucking Buggy having CoC than Sanji.