For background, here is the story (just example, not real):
I applied for a job but they want a person who don't smoke. In my resume I wrote as I don't smoke. They invited me for interview. 15 min before interview meeting I smoke a cigar. When I talk with HR manager, He felt that I smell cigar and he asked me a question that I didn't understand.
In that context, my question follows.
Okay, As you see I didn't understand what he is asking, So I want to ask him a question to understand what he is asking clearly.
So Can I ask him like:
Are you asking that I smoke yet I wrote I don't smoke on my cv?
So "is it appropriate to use "yet" there or something else you can recommend in place of yet?