Yeah if I'm completely honest, I'm on the line between educated and a slight germophobe, and something tells me that all this kissing malrky doesn't really help things. Babies and children seem to be a source of spreading viruses in this manner, although it's not their fault.
And yeah - it is a bit pedo. The reverse is when ya granny tries to kiss you on the lips at social functions. What a strange thing to do. Unless I'm the only one that happens to.