The flavoring of the lube isn't always as important as the performance and type of lube. A high-quality, long-lasting lube can hold-up longer, or avoid stickiness, and a tingle/warming lube can work wonders without flavoring.
We never use lube for oral sex. I can usually generate enough saliva for a good glide, and when he goes down on me, there is always enough natural lubricant for good slick oral sex. If there happens to be lube on either my vulva or his penis and testes when we go back and forth from oral love to other activities, I usually wipe it off, as I am not fond of the texture of any lube during fellatio. My Man doesn't seem to mind if I am lubed up from an other activity and he decides to go back Down Town.
We don't use "flavored" lubes for any reason. I don't like fake aromas or artificial smells, and personally, we both love the taste, smell and feel of natural sexual organs without any artificial enhancement.
I love to go down on My Man and he loves to go down on me, so we simply enjoy it the way it is.
I don't care for lube unless it is being used for penetration. When I give my husband head I prefer saliva. If he is going down on me, I would rather he not use lube unless he is using quite a few fingers or a toy. Really depends on if I am wet already or not. We do not own flavored lube though; I am leery of them giving me a yeast infection or irritating my VERY sensitive skin.
I like to alternate during play: hands, oral, sex, oral, hands, sex, etc. So, I like to use lube to avoid my wife getting too rough or too sore during a long play time. For a shorter play time, though, I usually don't bother.
We like lube for all kinds of foreplay. While I love lubes for his hands, they often were transferred so that going down on him meant I had to taste lube. We've since discovered coconut oil. It's a great lube in general and great for oral, too. It's all natural and delicious.