2,3-Butanedione is well-known for its butter, caramel odor, naturally occurring as a fermentation by product, albeit can lead to several respiratory ailments such as, bronchiolitis obliterans, aka popcorn lung disease 41
White Oak, MA: Food and Drug Administration
Depending on how frequently you smoke, your body may start firing off withdrawal sensations in as little as a few hours after your last cigarette
Speak to your doctor or pharmacist, free local stop smoking service, or visit NHS Smokefree to get support on how to stop smoking for good
After all, once you have cleared nicotine from your system, the only remaining compulsion to smoke is the psychological desire that may hit when around people who smoke, or engaging in activities that you enjoyed smoking with - like drinking alcohol