Fuente: WIPO "essential oil or extracts" The disclosure relates to a diffuser apparatus and system. The diffuser apparatus includes a gas supply line with an injection port facing a first direction for emitting a gas stream into a diffuser space. The diffuser apparatus further includes a dome-shaped surface positioned a first distance away from the injection port. The dome-shaped surface is in downstream fluid communication with the gas stream. The diffuser apparatus further includes a liquid feed line that is connectable in fluid receiving communication with a liquid source. The liquid feed line includes a suction port disposed on the dome-shaped surface facing a second direction. During operation of the apparatus, passing the gas stream over the suction port suctions a particle stream through the liquid feed line in order to form a combination stream.