My Doc told me that the sore throat is due to post nasal drip, apparently your lungs arent the only organ that gets caked with gunk when you smoke but your sinuses do also, they are clensing themselves and the result is post nasal drip that causes your sore throat. My Dr reccomended a saline solution you can get it at any drug store, it is just water in a nasal bottle really, it keeps everything moist and helps it recover faster.