Season 5, Episode 4: "The Sniffing Accountant"

Sniffing? What do you mean, sniff?

Sniffing with his nose.

Jerry, he probably had a cold.

No, he didn't. I asked him.

So what are you saying?

I don't know. You know, what if--?

Drugs? You think he's on drugs?

I don't know. All I know is he was sniffing.