The word is style....
Smoking does alter your voice, but many rock singers smoke the hell out ...., yes, they are smoking chimneys, and FAMOUS!!!!
So why is that??? Simply because smoking gives you sore throat, and if you want to sound like Rod Stewart, then go for it... It makes your voice husky and hoarse....
But if you'll a girl and want to be the next Britney Spears, or a guy and wants to be the next Michael Buble... then drink more lemon honey tea...