These don't really do anything other than cause health problems. About the only reasonable thing to do is to engage in good hygiene, wash the external genitals thoroughly and wear underwear that can breathe. You might even suggest that the two of you take a shower together as a foreplay to sex. I would suspect that despite his objections, he is still expecting oral sex from you. You might want to point out to him that you probably did not enjoy fellatio as much when you first tried it.
Oral sex can be an acquired taste, but reciprocity is only fair.
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