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|I can '''smell''' the fresh air outside.
|}
==Key Stage 2==
===Meaning===
[[Smell]] is one of the 5 main [[human]] [[sense]]s.
===About Smell===
: [[Human]]s can [[sense]] [[smell]] with their [[nose]].
==Key Stage 3==
===Meaning===
[[Smell]] is one of the 5 main [[human]] [[sense]]s.
===About Smell===
: [[Smell]] allows [[animal]]s to detect certain [[chemical]]s in the [[air]].
==Key Stage 4==
===Meaning===
[[Smell]] is one of the 5 main [[human]] [[sense]]s.
===About Touch===
: [[Smell]] allows [[animal]]s to detect certain [[chemical]]s in the [[air]].
: When an [[animal]] detects a [[chemical]] in the [[air]] [[Receptor Cell|receptor cells]] in the [[nose]] create an [[Action Potential|action potential]] which sends an [[Impulse (Biology)|impulse]] to the [[Central Nervous System|central nervous system (CNS)]].