I just noticed, Jenny and sam aren't wearing their infected armbands. They gonna get in trouble!... they just nuked the fridge, they don't need no stink'n badges...er... armbands.
It may be more optional on the infection side of the island where you know everyone is already affected vs the uninfected side. That said, with all hell breaking loose and a fridge full of explosive, who gives a @#$%!