No. As Smurfs are asexual creatures, Smurfs can not procreate. Smurf colonies are repopulated via a commensalist relationship with storks. In the case of Papa Smurf's colony, Feathers the Stork...
There is no such thing as 'Smurfity smurf smurf smurf' but 'Smurf smurfity smurf smurf' means a bad/ inappropriate word, it is not specific, though.
Female: Smurfette Male: Vanity Smurf
Papa Smurf
Yes it is called a placenta.