Kurt Cobain’s ‘Smells Like Teen Spirit’ guitar to be sold at NYC auction — and could fetch millions

Smells like a bargain. Kurt Cobain guitar from the “Smells Like Teen Spirit” music video will be sold an a Midtown auction next spring — and it’s expected to fetch millions, The Post has learned. The Nirvana frontman’s 1969 Fender Mustang will be put up as part of massive sale of the late Indianapolis Colts…