Benzyl Salicylate is a strange one. Many people, including myself, are totally anosmic to it. Give me a smelling strip dipped in Benzyl Sal, and I cannot smell anything. However, I am aware if it is presence in a fragrance, and can definitely smell its effect. Those folk who can smell it describe the smell as green floral. For me its effect is to add a natural floral quality, almost an outdoors feel to a fragrance. It cannot be replaced with anything else. It is one of the building blocks of traditional Perfumery (L'Air du Temps has, I think, 15.0%) and yet for many it is odourless. You are not alone.