1) Blow-out creator 2) Blowing out 3) Emitting 4) Exhaling 
• (a.) Having the quality of exhaling or evaporating.
Ex·hal'ant adjective [ Confer French exhalant .] Having the quality of exhaling or evaporating. 
exhalant 1. That which exhales; exhaling. 2. Exhalant artery or vessel, that which transfuses or conveys (blood, etc.) in minute quantities.
exhaling; emitting.