Whatever happened to scratch and sniff books?

When I was a little girl, scratch and sniff was all the rage.  I remember having scratch and sniff stickers that smelled like lime.  I can still remember exactly how that lime smelled, it was delightful.  But better even than stickers was this book (copyright 1978!) that combined the novelty of scratch and sniff with…

Strawberry Ice Cream EverythingSmells Scratch & Sniff Stickers

Books — Alexandra Levick

This Artist Used Over 6,500 Scents To Recreate The Smell Of 35

Whatever happened to scratch and sniff books?

A Brief History of Scratch and Sniff

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Sniffy the Skunk Scratch N Sniff Childrens Book Spiral Bound 1973

DK Scratch and Sniff Book Series

What the hell is a scratch n sniff sticker? : r/KGATLW

Honeydukes: A Scratch & Sniff Adventure (Harry Potter

Lot - 1978 The Once Upon a Time Scratch and Sniff Book Illustrated

Scratch & Sniff Book of Weed (Board Book)

Twenty traditional Mother Goose rhymes. Includes fragrance labels for the reader to scratch and sniff.

Richard Scarry's Mother Goose Scratch and Sniff Book