The team also uncovered a unique class of gustatory receptor neurons (GRNs) necessary for calcium taste in these model organisms. (sciencedaily.com)
5 - HT1 receptors are expressed by type II taste cells and 5 - HT3 receptors are hypothesized to be expressed in gustatory nerve fibers (Jackson and Yakel, 1995; Wang et al., 2002). (jneurosci.org)
This effect is called gustatory perspiration, and yes, it is very common. (fieryfoodscentral.com)