Wittere comes from the verb wittern, which means to scent or to smell, often in the context of an animal tracking prey. It's a more primal and intense form of smelling than the common riechen.
In "Du Riechst So Gut," Rammstein uses wittere to emphasize the predatory instinct of the narrator, who is tracking someone by their scent. The line "Wittere ich dich meilenweit" (I scent you miles away) highlights the obsessive and animalistic nature of his pursuit, making it a captivating and slightly unsettling word choice that perfectly fits the song's dark theme.
"Du riechst so gut" ("You Smell So Good") is one of Rammstein's earliest and most iconic songs, built entirely around the image of tracking someone by scent alone.
The singer never sees the person he's chasing. He only smells them, and that's enough. He compares himself to a blind child crawling toward its mother, and then to a predator that can find prey from miles away just by hunger and smell. The bridge he's crossing, made of reason on one side and instinct on the other, keeps narrowing until instinct wins completely.
By the end he's not just following anymore. He's waiting for dark, reaching for skin, telling the other person not to give him away. The lyrics never resolve into comfort. It's obsession written as a hunt, and the song's power comes from staying in that predatory headspace the whole way through rather than softening it.