嗅觉
xiù jué · HSK 7
sense of smell
👃 嗅 (to smell) + 觉 (perception) = the smell-perception, your sense of smell
觉 jué is the same perception that shows up in 感觉 (feeling) and 视觉 (eyesight). Pair it with 嗅, whose 口 mouth-radical sits beside 臭 (odour), and you get the nose's faculty: 嗅觉, the sense of smell.
觉 — see 见 + simplified 學 top 𭕄
觉 (traditional 覺) combines 學 (to learn, simplified to 𭕄) on top with 見 (to see) below, suggesting 'to perceive through learning.' Originally meaning 'to wake up' or 'become aware,' it extended to 'feel,' 'sense,' and 'sleep' (as in 睡觉). Read jué for awareness, jiào for sleep.