Combining with an odorant and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity in response to detection of smell.
opsonin receptor activity +
osmosensor activity +
reelin receptor activity
semaphorin receptor activity
serotonin receptor activity +
sulfonylurea receptor activity
taste receptor activity +
tiggrin receptor activity
transmembrane receptor protein kinase activity +
transmembrane receptor protein phosphatase activity +