Stainless Steel Cans How Come A Stainless Steel Draining Board Stinks Of Rotten Eggs?

How come a stainless steel draining board stinks of rotten eggs? - stainless steel cans

I installed 7 years before the new kitchen. If I noticed a terrible smell her for a while. Investigation I have noticed that out of the drainage board. It was with CIF times per week and at least 1 set of dishes to be washed into them emptied every day! I do not understand how stainless steel can stink. The dishwasher is less, but I have to clean and to once day.Could housing that are used in rotted? Is it time for a new unit made of stainless steel or other means to install?