Olan'vora

Olan'vora is a Varro biochemical reaction. During and after mating, the epidermal skin luminesces. Psychological bonding increases with exposure, stimulating the areas of the brain responsible for love. If allowed to advance, the olan'vora becomes permanent and the couple becomes bio-chemically linked. Separation thereafter is rare, however, up until this point the effects will diminish in a matter of months with decreased exposure. Withdrawal symptoms can be unpleasant.

Harry Kim became romantically involved with Derran Tal, a Varro female. She didn't believe it was possible for a Human to be affected by olan'vora.

Tal said good-bye to Kim and left him since the more time they spent together, the harder it was to part.