Arguably the most iconic musician of the 1990s, Nirvana's Kurt Cobain was a true grassroots musician who turned the music industry upside-down with the single 'Smells Like Teen Spirit.' However, Cobain was smelling other odors before Nirvana made it big -- working as a janitor.

To finance his passion for music, Kurt Cobain mastered the custodial arts for Lemon's Janitorial Service. Nirvana bassist Krist Novoselic recently gave some insight into Cobain's former day job.

"Here was a man who would never clean his kitchen or take out the garbage, or do those kind of chores, but Kurt Cobain was not a lazy person. Basically he cleaned toilets – that's how he paid for that demo."