Subject: do metals become smaller after we touch them for a long time

I have read an article and it says that the iron odour is a result of partial 
dissolution (corrosion) of the iron metal with acidic sweat from the skin, 
thus producing a metallic smell. I wonder if the iron loses some mass in the 
reaction since it says "corroded". Yet at the title of the article, it says 
that iron only acts as a catalyst to the reaction.

The link of the article is:
http://www.ufz.de/index.php?en=10473

Re: do metals become smaller after we touch them for a long time