Where does “tyyfus” come from?

tyyfus (Finnish) comes from Swedish tyfus, from New Latin tȳphus, from Ancient Greek τῦφος, from Ancient Greek τύφω, from Proto-Indo-European dhubh-, from Proto-Indo-European dheu- — scatter like dust.

tyyfus (Finnish): typhoid fever

Definitions

typhoid fever

Ancestry of “tyyfus”, step by step

Step	Language	Word	Meaning
1	Swedish	tyfus	—
2	New Latin	tȳphus	—
3	Ancient Greek	τῦφος	a kind of fever; delusion, vanity; nonsense
4	Ancient Greek	τύφω	to smoke, fill with smoke; to consume in smoke
5	Proto-Indo-European	dhubh-	—
6	Proto-Indo-European	dheu-	scatter like dust

Every word from Proto-Indo-European dheu- →Every word from Proto-Indo-European dhubh- →Every word from Ancient Greek τύφω →