Definition of scratch and sniff in English:

scratch and sniff

(also scratch 'n sniff, scratch 'n' sniff)

noun

  • The technique of applying scent to a surface in such a way that it is released when scratched. Frequently attributive: designating something which has or involves scent which is released when scratched. [A trademark in the United States.]

Origin

1960s; earliest use found in Tri-City Herald (Washington). From scratch + and + sniff.

Pronunciation

scratch and sniff

/ˌskratʃ(ə)n(d)ˈsnɪf/