Liquor consumption may contribute to canker sore outbreaks due to several factors:

Alcohol Content

Alcohol in liquors can irritate the delicate tissue inside the mouth, leading to the formation of sores in susceptible individuals.

Acidity

Some spirit drinks (such as whiskey) are acidic, which can aggravate sensitive oral tissues or existing sores, making them more prone to developing canker sores.

Nutritional Deficiencies

Heavy or frequent alcohol consumption might interfere with the absorption of key nutrients (e.g., vitamin B12, zinc, or folate) that play a role in maintaining oral health.