A decontaminating system (100) comprising a decontaminant reservoir (152),a transport fluid source (160) and a mist generating apparatus (10). The mistgenerating apparatus (10) has a longitudinal axis and comprises a first fluidpassage (38) having a first fluid inlet (18) in fluid communication with the decontaminantreservoir (152) and a first fluid outlet (84), and a second fluid passage (90)having a second fluid inlet (20) in fluid communication with the transport fluidsource (160) and a second fluid outlet (94). The first passage (38) surroundsthe second fluid passage (90) and the first and second outlets (84, 94) are orientedrelative to one another such that they have an angle of incidence between (5) and(30) degrees. The second fluid passage (90) includesa throat portion (92) locatedbetween the second fluid inlet (20) and the second fluid outlet (94), the throatportion (92) having a smaller cross sectional area than that of either the secondfluid inlet (20) or second fluid outlet (94).
