The notion that a specific type of alcoholic beverage, such as gin, doesn't produce a detectable odor the next morning is a myth. Alcohol, regardless of the type, is metabolized by the body at a fairly consistent rate, and the smell of alcohol on a person's breath or body is not dependent on the specific drink they consumed.
When a person drinks alcohol, their liver metabolizes it over time. On average, the liver can process about one standard drink per hour. This means that if someone consumes multiple alcoholic beverages, it will take time for their body to metabolize the alcohol fully.
The alcohol consumed is eventually broken down into acetaldehyde, which is a byproduct of alcohol metabolism. Acetaldehyde has a pungent odor, and it's the compound responsible for the smell of alcohol on a person's breath and in their sweat.
So, whether someone drinks gin, beer, wine, or any other alcoholic beverage, the acetaldehyde produced during the metabolism process will lead to detectable alcohol odor the next morning. The severity of the smell may vary depending on the amount of alcohol consumed and the individual's metabolism.
It's essential to remember that attempting to mask or cover up the smell of alcohol does not change the fact that a person's blood alcohol concentration might still be high enough to impair their ability to drive or function properly. The best approach is to drink responsibly, know your limits, and avoid drinking and driving altogether.