Question

How do we detect the smell of an agarbatti (incense stick)?​

Answer 1

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Smell of an agarbatti is detected by Nose, olfactory receptors present in the nose sends electrical signal to the fore brain. Fore brain interprets this signal as the incense stick to be detected as smell.

Answer 2

The smell of agarbatti diffuses in the air . It is detected by olfactory receptors present in the nose . This information is sent to olfactory lobe by sensory nerves located in the forebrain which further responds to the information .