Despite this, you might want to rethink letting them lick you.
Queen Mary University of London professor, John Oxford, confirmed their saliva can potentially spread harmful diseases that are dangerous to humans.
"It is not just what is carried in saliva," he said.
"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.”
If you are worried you have caught something, look out for any common cold symptoms.
Furthermore, seek out medical attention as soon as possible to stop an infection in its tracks.