You have got to realize that not everyone in the world is a fan of oral sex. We all know that everyone in p 0 r nos do it, but p 0 r nos are not reflective of real life and many participants are doped up. Other people just follow these type ideas without thinking. Many people are conscious of bacteria and odors, even though claimed harmless, and some would never even THINK of oral sex.
So, it is a matter of personal preference. Given this fact, no one in a relationship should be asked to do sexual practices that they do not care for. You got to ask yourself "Is this something you absolutely must have?" If so, you're going to have to make a decision to move on..since you would never want your partner to feel uncomfortable during sex...that wouldn't work either.