Sorry..yet another maintenance question. I know I am not supposed to use water, so after I cooked some great skirt steak in my cast-iron pan (in melted beef fat, as the butcher suggested), I let the pan cool, then attempted to clean with kosher salt. Put about half-cup of salt into pan, rubbed with paper towel and was left with brown salt in a smelly pan. Wiped salt out as best I could, wiped again with cloth rag, left pan on cool stove overnight. Today pan smells like grease and when I rubbed clean paper towel inside, the towel got grease all over it. Question: If I clean the pan the right way, will the grease smell linger or did I do something wrong? I am about to put water in it to get rid of the smell.