Original sentence: The lake water has a slightly sulphurous smell, which may explain the origin of its name: "Lachuá" is derived from the Maya Q'eqchi' words "li chu há" which  means "the fetid water"
Edited sentence: The lake water has a slightly sulphurous smell, which may explain the origin of its name: "Lachuá" is derived from the Q'eqchi' words "li chu há" which  means "the fetid water"