Here's something "kool" to add scents to your cards. Give it a try!
You don't actually have to scratch it… just brush your thumb over the embossed part to revive the scent.
1) Mix embossing powder with an unsweetened powdered drink mix (flavor/scent of your choice) in a 1:1 ratio. Example: 1 tsp of embossing powder with 1 tsp of drink powder. OR whole package of drink mix powder (equivalent to 2 tsp per package) with 2 teaspoons of embossing powder.
2) Apply embossing ink as usual when embossing. Then sprinkle the scented embossing powder over the ink. Shake off access and heat as usual when embossing. Heat til it shows some shine.
The image will be textured, like rough sand paper, but the scent stays put. If you prefer a little bit of a smoother texture, you can grind up the powdered drink mix a little finer before mixing with the embossing powder.
This would be cool to do with a set such as Gorgeous Grapevine with a grape flavored mix, just to name one of so many other possibilities. Enjoy!