Kiss you're baby on the mouth??

Mommy of 💙💙💜

So I saw a post on facebook from a friend that just had a baby about how kissing your baby on the mouth is pretty much gross. 🤔🙄. I'm honestly confused I understand anyone else who is the not mother or father. But that's your baby. I kiss all my children on the mouth. Now when they get older it will change for me. But what are your thoughts?