All sounds normal for your cycle process. The smell is the die-off from the live rock. It's bad, i know, but it is quite normal.
Did they throw in a raw shrimp to cycle the tank? I know that it will sometimes make an unpleasant odor as it decays (and thus cycles the tank).
There is no need at all for a raw shrimp when using 2 lbs per gal
of uncured LR
. That is PLENTY of ammonia production on its own.
as for the smell you could do a water change
I wouldn't do a water change either....it will just prolong the cycle.