Yes, it is possible for licking to cause a yeast infection, particularly in the genital area. Yeast infections are typically caused by an overgrowth of the fungus Candida, which can occur when the balance of bacteria in the body is disrupted. When a person licks the genital area of another person, they can introduce bacteria from their mouth, which can upset the delicate balance of bacteria in the genital area and lead to the growth of Candida. Additionally, if the person doing the licking has a yeast infection in their mouth, they can transmit the infection to the other person. It is important for both partners to practice good hygiene and to communicate openly about any symptoms or concerns they may have. If a person suspects they have a yeast infection, they should see a healthcare provider for diagnosis and treatment.