I have seen the product previously used to use my airways when using Mildew (Chlorinated spray) and use of lime remover (strong irritant smelling spray). In both procedures I have barely (if not any) perceived odor. After removing the mask surprised one of the pungent odor (one has not noticed previously with mask!). The mask the Wanted adapts very well, is comfortable to carry and the breathing is not impeded. Top product!