Scratch and sniff

Marijuana-scented cards are being distributed across the UK in the hope that they will help people to literally sniff out crime.

I remember those scratch and sniff stickers back in elementary school. Or am I too old that no one else knows what I just said

They used to do scratch and sniff TV. They would send the cards out in the post and you would scratch off certain areas when they told you to during the show. Felt like you were on set.

The only scratch and sniff I have come across is in perfume ads in glossy magazines

i used to love the scratch and sniff stickers. We got them in school when we were young. Curious to know how bad those things were for you.

At the least, it seems like you would be inhaling all the particle dust that comes loose when you scratch the stickers.

They still do scratch and sniff stickers.