What effect pedal do you use for smells like teen spirit?

Answer 1

Well, the intro is obviously clean sound, then verse a little bit grunge-like sound and in the solo probably chorus/flanger.

This is mostly correct. You will need a distortion pedal (if your amp has distortion, that will work but the correct pedal would be a Boss DS-1), a chorus pedal (any chorus will work but the pedal used in the recording is a Electro Harmonix Small Clone) and some kind of compression/sustainer. The comp pedal isn't required...most people get by without it when they cover the song. But a compression effect is used in the recording. The first part of the intro is clean, the second is distorted. Use the chorus for the verses and the prechorus, then switch it off and go back to the distortion for the chorus and preverse. Use all the effects for the solo.