Originally Posted by Clifshey
It does not need to be replaced : it needs to be cleaned.
Note : your carpet and padding has been soaked with watered down sewage!!
With such a contaminating I strongly suggest to take it up, and "wash"/"rinse" it in the bathroom tub.
I doubt the padding can be "rinsed", so you may have to replace that.
No other way will remove so much of the dirt that is in it now.
Afterwards hang it to dry outside. Do not apply any heat (crimping).
Of course if you can afford it, the (next) best thing to do is replace both carpet and padding!
As always : if this solves your problem, please rate the answer(s) provided! Feed back is always appreciated!