A strange herb found in the forests of the Sahara Desert. Commonly used to treat the over abundance of humour in a person. One flake of Smelnick can kill any jokes for a period of time lasting 3 years. Smelnick stays in a person's system of years and years.
Various other uses of the word have been made up. It is both a verb and a noun now. If you Smelnick something, you've made it unfunny.
Frank came upon several girls giggling uncontrollably. He sprinkled some Smelnick into their noses and the giggling stopped instantly.