The smell is very subject to your individual noise. Some will say they cured live rock in their tank and smelled nothing where as others will tell you it kept them out of the room for weeks.
The thing to do is to cure the rock in a location where smell wont be that big of a deal. In your garage if you have one that is somewhat heated given its winter. All you will need for that is a 30 gal
plastic trashcan that holds water. 15 gal
or so of saltwater with a few powerheads and a heater in the trashcan. Add the uncured rock and let it cure in the trash can. Reference our articles area on detailed description on how to cure live rock this way.