Where does “fumódromo” come from?

fumódromo (Portuguese) comes from Portuguese fumo, from Old Portuguese fumo, from Latin fūmus, from Proto-Italic fūmos, from Proto-Indo-European dʰuh₂mós, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

fumódromo (Portuguese): smoking area, smoking room

Definitions

smoking area, smoking room

Ancestry of “fumódromo”, step by step

Step	Language	Word	Meaning
1	Portuguese	fumo	smoke; fume; tobacco
2	Old Portuguese	fumo	—
3	Latin	fūmus	smoke, steam, fume
4	Proto-Italic	fūmos	smoke
5	Proto-Indo-European	dʰuh₂mós	smoke
6	Proto-Indo-European	dʰewh₂-	smoke; mist, haze

Every word from Proto-Indo-European dʰewh₂- →Every word from Proto-Indo-European dʰuh₂mós →Every word from Proto-Italic fūmos →