"But it's only onlux, just onlux!"
― Lyneea to John Crichton

Clorium was a common element, one of the six forbidden cargoes for Leviathans. It was a forbidden cargo because it numbed Leviathans.

It was used to help Moya with the pain after a Peacekeeper tracking device was removed. John Crichton and the rest of Moya's crew discovered some on Denea where the Deneans knew it as "onlux" and used it as a seasoning like salt. ("I, E.T.")

Clorium bore a number of similarities to sodium chloride, common table salt. ("Cool Farscape Facts" - Starburst Edition DVD v1.1)
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