煙たい
けむたい · kemutai · JLPT N1 · i-adj
smoky
💨 煙 (smoke) + -たい as in 眠たい (sleepy): smoke that stings, so it feels uncomfortable
Smoke stings the eyes and throat, so the awkward sense grows from that discomfort. The -たい ending is the same as in 眠たい (sleepy), a feeling-adjective suffix.