India, Nov. 25 -- Anyone who has heard playback singer-composer Angaraag Mahanta aka Papon's voice in his heartwarming rendition of the song Moh Moh Ke Dhaage knows that it doesn't sound the same at the moment. Facing difficulty in expressing his elation over his recent performance in Delhi, Papon admits that he has fallen prey to the ill effects of smog prevalent in northern India....