I also got an infection but it isn't caused by smoking, something gets caught in your gums as they heal and it grows over and then you get smelly and swollen, hurts like a bitch to drain and it smells like death. Happened 15 days after extraction for me. You can smoke if you want and you're careful, simple as that. Just take long low suction tokes and don't form a seal with your lips and there ya go, you won't get an infection from it and you won't get dry socket unless you're an unlikely statistic or you're toking foolishly. And that's the bottom line.