In other words: if you want to be the next Yves Saint Laurent, it helps to be completely and utterly obsessed with fashion. However, there are many aspects of the profession. Working as a fashion designer can just as well mean supervising a design team at a sportswear company as producing a label under your own name.
Olfactory receptor cells, actually neurons, are the site of transduction. Olfactory receptor cells are the only neurons in the nervous system that are regularly replaced (they last about 4-8 weeks). The size of the epithelium is a good indicator of the acuity of an animal's sense of smell.
1 Chemical substances must be dissolved in water to excite the receptors for smell and taste.  The olfactory (smell) receptors are located in the superior aspect of each nasal cavity (Figure 8.7). Sniffing helps to bring more air (containing odors) over the olfactory mucosa.