Scenario: You're feeling like you have this whole lovemaking thing on lock. You're trying out something new, and it seems to be going well. she's enthusiastic. Until a small, potent burst of air escapes your ass.
Solution: Own up to it. Pretending you're incapable of producing a foul scent will prove futile in this situation. Instead, laugh. Sex is comedy. That's the only way to get through this one.