Where does “fumtubo” come from?

fumtubo (Esperanto) comes from Esperanto fumo, from Spanish humo, from Old Spanish fumo, from Latin fūmus, from Proto-Italic fūmos, from Proto-Indo-European dʰuh₂mós, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

fumtubo (Esperanto): chimney, flue

Definitions

chimney, flue

Ancestry of “fumtubo”, step by step

fumtubo traces back through two separate lines of ancestry.

via Esperanto fumo

Step	Language	Word	Meaning
1	Esperanto	fumo	smoke
2	Spanish	humo	smoke; steam; fume, fumes
3	Old Spanish	fumo	smoke
4	Latin	fūmus	smoke, steam, fume
5	Proto-Italic	fūmos	smoke
6	Proto-Indo-European	dʰuh₂mós	smoke
7	Proto-Indo-European	dʰewh₂-	smoke; mist, haze

via Esperanto tubo

Step	Language	Word	Meaning
1	Esperanto	tubo	tube
2	English	tube	Anything that is hollow and cylindrical in shape;...
3	Middle French	tube	conduit; canal; pipe
4	Latin	tubus	tube, pipe; trumpet used at sacrifices
5	Latin	tuba	A long trumpet over 1 meter in length; tube

Words derived from “fumtubo”

fumtubego

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