Scratch-and-sniff is a term that refers to products, such as stickers or paper, that can release a scent when rubbed or scratched. Some other synonyms for this term include scent-based, fragrance-infused, aroma-printed, odour-wafting, and aroma-release. Scratch-and-sniff products often use oil-based fragrances or microencapsulated scent particles to create their unique aroma. These products are used in a variety of settings, including advertising, education, entertainment, and even as a novelty item. As people continue to seek out new experiences, it's likely that scratch-and-sniff products will remain a popular way of incorporating scent into everyday life.