I hav undrgone sinus surgry 4yrs bck. I hav noticd dat nw a days wen I catch cold, the cough (mucous) becums thick and clogs my both nostrils or sumtimes only left nostril(may b in sinus cavity). I was operated for my left sinus. Is it a sign of sinus problm again? Y mucous becums so much thick? solutn othr den surgry?
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