It was the newest episode that just aired. Idk which detective it was as I had my back to the tv at the time, but he said something about cat allergies. The sneeze wasn't very good I don't think, but I thought I'd report anyway. It was roughly 2/3 of the way through the show. That's all I know

Beat me to it!

The episode is called "Turbulence" and the sneezer was Det. Flack (actor Eddie Cahill). Flack has complained of cat allergies before. The scene happens as they walk into the nightclub owned by the character who was played by rap star Nelly.

Oooh, must find that episode! Even if the sneeze wasn't all that good, Nelly is in it! YAY! Thank you!