Are there any Dilbert fans out there who could help me to find a certain strip?

It is a very old strip - I guess it is in one of the books but I simply can't find it - maybe it was a calendar? Alice sits in front of her screen - she is getting crazy about "silly office noises" in the background "but can't complain as it would sound silly".... any idea???? I have an intern who has to suffer from a fat guy sitting next to him as he keeps scratching his belly, he makes sleezy sounds when munching his apple and has other nice noises on offer ;-) He would love the Dilbert strip.