What can I say when I can smell his dick smelling like warm mayo & don’t want to put my face near it ?? 😖

I don’t want to hurt his feelings but I also want to say something to get me out of it or maybe even let him know nicely. He be so into the mood & just wants me to give him head & im like “🤢”. Because I know he would feel embarrassed & it would kill the mood we have going on 😩

Any advice will help lmao