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Scientists have found out [why / what] certain smells recall feelings of nostalgia and can recall [distance / distant] memories. The scientists say an area of the brain is [responsibility / responsible] for assigning memories to smells and for [storage / storing] them for decades. The area can [instantly / instance] recall the memories with great [clear / clarity] years later if a person encounters the smell again. Christina Strauch, from the Ruhr University in Germany, said smells [are / be] stored in the olfactory brain. The word olfactory means anything [related / relation] to the sense of smell. She said: "It is known that the piriform cortex is able to [temporary / temporarily] store olfactory memories. We wanted to know if that [applicable / applies] to long-term memories as well."

There are a [multiple / multitude] of scents that can transport us [back / forward] to our childhood. Smells from cookies baking [in / on] the oven or the perfume of an elderly aunt can bring back surprising recollections of [growing / grown] up. Professor Strauch said certain scents can take you away to another point [at / in] time. Strauch said some odours can make you wish you were actually back in a certain point of time, or make you want to [evade / escape] . She said it depends [on / in] whether or not the smell has a positive or negative association. Aromatherapists partly [depending / depend] on this for their patients. Smells can [even / ever] encourage you to buy things in stores. Many stores introduce fragrances to shoppers to evoke nostalgic memories to buy things they loved years [passed / ago] .