Sorry it's such a boring question.
Overnight there was a huge leak from the mains water pipe into my kitchen at floor level. The water flooded downstairs, and the laminate in every room was squelching underfoot.
We turned off the water from the stopcock outside and the issue has been fixed
Our floors are concrete, celotex, chipboard, underlay, laminate.
Do I really have to rip it all out and replace? If I just left it with a dehumidifier and the heating on, will it all just go away? 
It was only laid last week and having to remove it all will set our project back weeks and cost ££££.