What is a 'smell tone'? If you are guessing,
like a ring-tone, but you smell it, you are right on target, and probably from Japan (major Engrish warning):It is epoch-making mobile accessories to inform of arrival of the mail of a cellular phone in "odor". Hangs it on a strap of a cellular phone, and faint odor opens at every telephone and arrival of the mail of an email for five seconds.
Yes, you can finally find out what Hello-Kitty smells like. And no, I have no interest in discovering what 'NIOUNDESU, It Really Smells' will do to my olfactory senses. (I figure it is eue-de-pepe-le-pew.)