Yalosian

The Yalosians were a spacefaring race. Yalosians breathed nitrogen, benzene, and hydrogen fluoride and could not see red or orange colors.

In 2371, a Yalosian ambassador was to visit Deep Space 9. Julian Bashir provided Kira Nerys with the atmospheric specifications required, although Kira found that the corrosive nature of the mix started to dissolve the carpet in one of the quarters on the station.