1. The crayon box. Kathryn Decker I can't describe it, but I know you know what this smells like. 2. Plasticine. Getty Images Your hands would smell for days after using this stuff. 3. The parachute. jencu / Via Flickr: jennycu Close your eyes and remember that fresh, crisp air. 4. These exact counting blocks. hunterstoysclub You could sniff these out from a mile away. 5. The heat from the radiator. Getty Images You could say the smell ~radiated~ through the classroom. 6. PVA glue. Curlysass / Via reddit.com If you know, you know. 7. Lego. Getty Images This picture smells like good times. 8. A wet one of these bad boys. Camcare Health Water + paper towel = top-tier primary school first aid. 9. These exact crash mats. Sophie Gadd / BuzzFeed Anyone that face-planted onto one of these knows what I'm talking about. 10. And this exact vault. Sophie Gadd / BuzzFeed The same goes for this. 11. Alien babies. Amazon Ah, that articifcial, slimey goodness. 12. This wood block. LettuceRockk / Via reddit.com Yeah, it smelled like wood, but also memories. 13. Scented gel pens. Emilian Robert Vicol / Via Flickr: free-stock Need I say more? 14. Potato smileys. Getty Images The school dinner of champions. 15. The Scholastic book fair. Kentucky Country Day / Via Flickr: kentuckycountrydayschool 😍😩 16. Pencil shavings. Getty Images If you can't smell this picture, did you even go to primary school? 17. Tipp-Ex Getty Images That chemically smell of mistakes. 18. And finally: the boys' toilets. Getty Images This smell is seared into my memory.