Nobody does.

The other day I was at a craft fair with neighbor Pete after work. As we strolled past a table selling scratch-'n-sniff clothing, Pete suggested that I should buy myself a pair of the underwear. 'There's a muffin scented thong,' he said. (In my defense, I had not eaten much all day and was in the process of quickly sucking down a beer which was going straight to my head...) I replied, very loudly in a small crowded space, 'NOBODY WANTS TO SMELL MY MUFFIN!'

Thinking this over later, I wonder about the saleability of scratch-'n-sniff underwear. Is that really an area you want to associate with scratching? Scratch, scratch, scratch... 'Mmmm, smell this!' 'No really! It smells good! I promise!'