As it's stated, this question allows many possible combinations. I'll cover the ones that come to mind right now. . .
First, the women who I've been in the act of caressing orally have not hesitated to kiss long and deeply when my mouth had been all over their clits, vulvas or anuses just a few seconds before. I'm speaking of my ex-wife, and the few girlfriends I've been intimate with to that degree. I can't recall even one who ever showed anything but eagerness to kiss when I moved from her pelvis to her mouth.
I've never had a woman attempt to kiss me after I've cum in her mouth. After fellating me for a while, yes; but not after I've shot. I have to say, the thought of having my own cum snowballed into my mouth is revolting. Why, I can't say -- the objection is not rational, given my strong oral orientation overall. A little irony here: The only women who took my loads (and I assume, others, too) in their mouths with pleasure were mature belles of the wholesome Midwest. Here in California, I've not met one. Anal sex was not unknown back in the heartland, either. There were massage parlors in Indianapolis and Evansville where I was treated to expert and truly transporting bare-finger prostate massage. Yet, at that time in the heartland, the prevailing belief seemed to be that California was the undisputed epicenter of kinkiness and kookiness and perversion. Pooh-poohing us West Coasters, while leaving missionary sex for the sole purpose of procreation in the dust. Hypocrisy, but of the best kind!
On to Florida, and a unique (for me) erotic experience. I became friendly with a woman who was a receptionist for a company I was assigned to support. I was there for probably three months out of the year they contracted for help. The office staff, almost all women, habitually took lunch outdoors, at shaded tables on a lawn. I arrived later than usual one day, and when the other women left, this friend lingered behind. She came to the point fairly quickly: She and her husband were looking for an additional male guest to swing with them -- they already had one lined up, so it was to be a foursome: she, plus three men, including her hubby. I said admired her pluck, making such a proposition to someone at work -- but went on to say, it was a risky move. When I accepted, she said it hadn't been so risky really, because she knew me well enough by then to guess at my interests. At the time, she was late 30s; I was mid-30s; hubby turned out to be somewhat older, mid-40s. The other guest was considerably older -- say, 55. So as not to make this into a novel, I'll skip to the point. The other guest, fully reclined on the bed, and after a truly impressive display of neck and mouth endurance on the wife's part, finally shot into her mouth. Not a "facial" -- her lips were sealed around his shaft. At this stage, her ass was in the air, and hubby was back there eating while slowly masturbating. I was face-to-face with her, only inches away from the action, swooning over the incredible real-life close-up of an oral artist at work. When he began to relax, still panting after his quivering climax, she loosened her lips and let some of the mixed fluids drain onto his pubis. And then, without any signal, her head came off him, and she grabbed me by the back of the head and kissed me. She thrust her tongue into my mouth, which was open to match hers. There were still literal gobs of fluid in her mouth, and I could sense instantly, as she delivered it into mine, that much of it was cum: very different "mouth feel" than saliva alone, and a subtle but distinct flavor. We've all heard the expression, "out-of-body experience"; I had one at that juncture. She kept working her lips and flicking her tongue like a fiend, and as she did, I felt a surge of arousal that's beyond my ability to convey. I had absolutely no impulse to recoil from her -- rather, I bored in with an instantaneous hunger that may have surprised her! I said earlier that my revulsion at the thought of being fed my own cum was irrational. The story I just told shows my reason for saying it: Given that cum is cum, there's no objective reason why tasting my own should be revolting, when having the cum of another troweled all over the inside of my mouth by a woman's tongue would take me to some new height of excitement!