In the 'Breathalyser' challenge, both the blue and green teams sat in a row of cubicles behind ten plates of various foods, with the blue team starting off the task.
Conor McIntyre was the first in line to take part, opening an envelope to reveal that he must consume coffee before breathing down an oxygen mask to next player Luke Anderson.
Luke A then had to guess which of the foods Conor had eaten, before eating the same himself and breathing down the mask to Shievonne Robinson, who appeared in some discomfort after smelling her fellow housemate's breath.
Shievonne, however, correctly guessed that the others had been consuming coffee, earning the blue team one point.
Both teams underwent six rounds each, with a point given for each correct answer at the end of the chain. The blue team managed to score five points in total, while the green team could only grab two points.
This earned the blue team the opportunity to enter a mysterious secret room later this evening (July 7), the contents of which are unknown by the housemates, while the green team would be banned from entering the room.
