Pretty sure i didn’t understand shit in this episode except for the fact that enzo is do...

Someone here explained it pretty well - @AlexDiaz - "uno needed to get the tiny chip with the data past security so he stole enzo's cigarette, put it on there, and when enzo used the cigarette again the thing stuck to his tongue. Then later when they went through security uno got enzo to walk past the metal detector (enzo's the only person in the building who can pass through it without raising any alarms) and then uno kissed him and used his tongue to steal the chip back"