[Bruvfan]

The whole cast should be comprised of chain smokers. Anyone talks about nominations once and no more cigarettes for anyone.

But seriously I think there should be a clear and graduated punishment system for rule breaks. For example:

1st rule break = Your nominations get voided
2nd rule break = Automatically nominated for eviction + your nominations get voided
3rd rule break = Immediately expulsion, called discreetly to the diary room, no goodbyes, not BOTS, no wrap party, nothing. A new housemate takes your place.

They really need to make an example out of someone, turning off the hot water for a day is not going to deter them from talking about nominations.