I would focus on how the expression of "love" in all of its forms is present in the novel. Dracula certainly conceives of love in many forms. The taste of Lucy's blood could certainly be one part of this, or when the men have to watch Lucy immersed in tasting Dracula's blood. There is the sensation of smell in this process, as when Harker is in the castle and is overcome by the women to whom Dracula has to give the command to back away. The carnal expression of love experiences touch as well, and sight is also a part of this process. The manner in which Dracula expresses his "love" or consumption is a process by which sensation plays a vital role. The depiction offered in the book seems more carnal and devouring than anything else, which is why the senses are such a large part of this.