Was Nirvana emo?

Was Nirvana emo or if Nirvana was born today, would it be classified as emo?

Nirvana may have been similar to todays "emo", but back when Nirvana was doing it,
it was sincere, not some trendy fashion like it is now.
The point is any display of emotion/anger is automatically thrown into the angst/emo
category now.
Emo's an open-ended label, just like gothic. There's no absolute term for it yet, so
yeah, nirvana could be emo.