“It is not just what is carried in saliva. Dogs spend half their life with their noses in nasty corners or hovering over dog droppings so their muzzles are full of bacteria, viruses and germs of all sorts.”
Basically, your dog’s mouth is disgusting and can pass diseases onto you through dog kisses…Like Capnocytophaga Canimorsus: This one’s really bad. How bad? This man was told by his doctor that his capnocytophaga canimorsus infection was caused by a dog licking his open wound.
Ringworm infection: A ringworm infection is one of the easiest diseases for your dog to pass onto you from smooching.
If the ringworm bacteria is around their mouth and you engage in kissing, bam. Ringworm for you too.