The excitement on olfactory cell horse rises, change the stimulation that experiences into specific information, pass into cerebrum, produced smell then, the person smelled odour.

• 嗅觉细胞马上兴奋起来，将感受到的刺激转化成特定的信息，传入大脑，于是就产生了嗅觉，人就闻到了气味。