Certainly nothing seems to instantly fill your head with a nostalgic image than a particular smell.
Meths - Instantly transported back 35 years to my back garden in Hazel Grove, Stockport. Carefully filling the lint-filled burner tray of my Mamod model Steam Roller.
(Yes children, before Playstations, we were encouraged to play with fire and highly pressurised steam. What could possibly go wrong?)
Baking Cakes/Biscuits - I'm now cycling along the A6 to Openshaw Tech for my night-school class, circa 1982, I'm just passing the McVities factory.
Fish & Chips (although they have never in all my life tasted as good as they smelled)
Best of all though is Bacon cooking, preferably outside a tent. Bacon
can taste as good as it smells.
Here we see Chillmoister doing the honours while Urban_Biker drools onto his shoe
Hands up if you can smell that through your PC monitor