I don't find the prosthetic vags odd or creepy. Just... not useful. The breastforms barely did anything to help me, the most they did was make mirrors slightly easier to handle. Other than that they just creeped me out with the plastic on flesh sensation. Pretty much as soon as I developed enough to get kinda pointy, I stopped using them because seriously, my body (even if it currently has 14 year old girl boobs) is better to have than any prosthetic for me. I imagine the prosthetic vag would be even more useless as it isn't visible so it wouldn't even help with mirrors. It would just make things sweatier and more cramped and prolly shift, giving me dissonance attacks. Not fun.
Even the scent thing isn't really creepy. If the scent of ballsweat is a major dissonance causer (it isn't for me, mostly because I can't smell my crotch and wouldn't want to put that kind of effort into something like that) then it makes sense to get something that can cover that with something that feels like it fits better (or at least ******** covers it). For me the only scents that bothered me was the scent of my sweat (which was wrong smelling, i.e. dissonance), but that changed after a few months on estrogen. Now my scent doesn't smell wrong. Although like all sweat, it's still ******** gross. Now it's just icky and not: "omfg dissonance clawclawclawdrinkdrinkdrinkdie".
It's funny how most of my bodily issues have shifted into just regular old self esteem problems and not the "want to burn the flesh off of me cuz omfg it's all wrong and this is wrong and wtf *selfstab*" dissonance.
Funny as in, whew, it's a lot easier to deal with and funny as in, anyone who says that the bodily dissonance that we (trans folk) go through is anything like their fairly standard low self esteem or body dissatisfaction is smoking some serious cis privileged bullshit crack and needs to go amputate their own head with a s**t stained claymore so their stupid no longer stains the world.
Huh, I sound bitter. I guess I am about minimizing, downplaying assholes.
As a note: I won't get pissed if you're making comparisons to try to get what I'm going through better. It's not very effective and you won't get a good comprehension by doing that, but at least you aren't trying to minimize or downplay my dissonance like some kind of wire chewing s**t head who thinks trans folk are just delusional.