User blog comment:Mythical zoan fruit enthusiast/For those who want Luffy to have Mera Mera and Gomu Gomu/@comment-9101417-20130504201005/@comment-195.241.127.96-20130504213749

That doesn't mean he just can eat a second DEVIL fruit, which is said to kill a man when two are eaten by the same person. I don't know if anyone actually tried (except Blackbeard). But Blackbeard might be able to use another one in total three because of still unknow reasons. I don't think anyone else would be able to just do the same, that would make it not cool at all xD. And yeah the same with Sanji, just because he uses fire doesn't mean he needs that fruit, it's more the otherway he doesn't need it. I don't think anyone in the crew will eat the fruit, im pretty sure. The marines might even get hold of the fruit to prevent an enemy getting it.