Is there a name for someone who cant share food or drinkks because of germs?

Yes, the term for someone who cannot share food or drinks due to a fear of germs or contamination is colloquially known as a "germaphobe." This behavior can be associated with an obsessive-compulsive disorder (OCD) or anxiety disorder characterized by an excessive or irrational fear of germs, contamination, or dirt. Individuals with germaphobia may engage in excessive cleaning, handwashing, or avoidance behaviors to reduce their perceived risk of exposure to germs.