No, (subliminal) baby crying sounds probably prepare women to lactate via hormones. It is probably related to breasts getting bigger during and after pregnancy. As such I suspect the result is temporary and stops when the input is no longer received for a while. I’m betting it is a lot safer then surgery though, although long term effects are not known yet (breast cancer risc going up or down etc).
And yes, like “brain waves” I think artists (that are into this) could use it to their advantage. Si could start with a remix of his “Big Tits” track with the Audio Chemists.