Is it normal for ifc teachers to kiss your baby?

I have 5 baby nephews and I used to pick 2 of them up from their infant care. When I reached earlier than my mother (I’m sadly not the guardian haha) I sit outside the gate and I always see the teachers kissing/smelling the babies head. Personally, I feel that as long as never kiss the face is okay. (Head/hair/hands are alright) you can think of it this way: the teacher dotes and show affection for your baby, hence baby is in good hands. Ofc, if you mind then just reach out politely and inform that you are not comfortable.