Many cell types and tissues in the body use chemical sensors, or chemosensors, to keep track of the concentration of hormones, metabolites and other molecules, and some of these chemosensors are olfactory receptors.
Mnoge vrste stanica i tkiva u tijelu koriste kemijske senzore, ili kemosenzore, kako bi pratili koncentraciju hormona, metabolita i ostalih molekula, a neki od ovih kemosenzora  su olfaktorni receptori.