Cured LR should have a nice, pleasant, clean ocean smell to it. Anyone who has doubts on whether or not a retailer is selling uncured LR as cured should ask to have a sniff....and I mean the rock itself, not the tank it is in. If they refuse, take your business elsewhere.
IME, not all shipments arrive at a retailer in a foul state. One LR purchase I made had arrived at the store the day before.....but it smelled good so I bought some. I forget the amount I bought, but I didn't have a problem with it.
Have a sniff.
Cheers
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