the fathers were HIV-positive, not the mothers.
that (besides the obvious ethical concerns) was a big reason behind the backlash from the genome editing community. we had already known a much less invasive method for preventing HIV infection of the embryo in this case, by ‘washing’ the seminal fluid away from sperm (sperm cannot become infected with HIV, but the HIV particles would be in the fluid surrounding the sperm).
flavor is an experience created by your brain (or at least, created subjectively internal to an agent if you don’t want to accept that conscious experiences are fully explained physically)
so this makes no sense, flavor just is what you experience.