A bit of thread drift Re: Jeffp's post:
My favorite pathagen paranoia ad of this kind show a bunch of slimey, filthy brats runnig over to pound on the family piano. The keys then bloom a batch of germs complete with anthropomorphic cartoon bacteria, complete with gnashy teeth and eye stalks.
Mom gives them a "oh, you cute scampy kids" looks then hoses down the keyboard with an antibacterial spray (Clorox?).
G'aaaaaaah!
Later versions of the ad had little tiny letters at the bottom of the screen advising you to follow your piano makers cleaning instructions.
G'aaaaaah!