It is possible to smell alcohol on someone’s breath the next day if they have consumed a large amount of alcohol. Alcohol is metabolized by the liver at a rate of about one standard drink per hour, and some people may take longer to metabolize alcohol depending on factors such as their body weight, age, and gender. If someone has had a lot to drink, their liver may not be able to process all of the alcohol by the time they wake up the next day, and they may still have alcohol in their system, which can lead to alcohol breath.