I experienced something similar with my dad's ten year old syrah aligante grenache blend. I read online that sommelier would place two pennies in a glass for 30 minutes and the smell went away. So here I was. Three bottles that stunk of rotten eggs. I emptied the three bottles into a miniature 5...
Nebbiolo is a grape that grows in northern Italy. Piemonte is the area where the greatest quantity of Nebbiolo is planted.
Barolo represents a wine style in the same way that Chianti is a wine style.
There are hundreds of wineries that produce Chianti as there are many who produce "Barolo"...