Studies have shown that smokers are significantly more likely to get a dry socket as compared to those who don't.
For example, after evaluating the outcome of 400 wisdom tooth extractions, Sweet (1979) determined that:
Patients who smoked 10 cigarettes a day experienced a more than fourfold rate of dry socket formation (12% vs 2.6%).
The rate for patients who smoked 20 cigarettes daily was 20% higher.
The rate for patients who smoked on the day of their surgery or on the first day following was 40% greater.