Where does “kouřový” come from?

kouřový (Czech) comes from Czech kouř, from Czech kouřit, from Old Czech kúřiti, from Proto-Slavic kuriti — to smoke.

kouřový (Czech): smoke

Definitions

Step	Language	Word	Meaning
1	Czech	kouř	smoke
2	Czech	kouřit	to smoke
3	Old Czech	kúřiti	—
4	Proto-Slavic	kuriti	to smoke

kouřový — Etymology, Origin & Word History | Etymology Explorer