Alternatively, the atomizer comprises two channels respectively comprising {HEAD ~ a fluid emitting nozzle} and {TAIL ~ a treatment emitting nozzle} 
Alternatively , the atomizer comprises two channels respectively comprising { HEAD ~ a fluid emitting nozzle } and { TAIL ~ a treatment emitting nozzle }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL