The purpose of a dialogue is to inform, communicate ideas, and to get an understanding. It is a necessary evil. Some people are better at this than others. The easiest way to circumvent an uncomfortable exchange of words might be:
1. Do not become defensive
2. Do not respond in haste (examine the question acknowledging the character of the person asking)
3. Be brief in your response
4. Use simple language and terms so as not to offend.
Side note: To preface a reply with "no disrespect," or "no offense," is a clear sign that you are about to disrespect or offend someone.
Conclusion: People should not be punished for asking questions no matter how uncomfortable the questions may make you feel. If you are quick to anger, you should examine yourself and identify those truths you are trying to avoid. Even if you refuse to acknowledge this to others, it is good practice to be honest with yourself.