Odorant receptor which mediates acceptance or avoidance behavior, depending on its substrates. The odorant receptor repertoire encodes a large collection of odor stimuli that vary widely in identity, intensity, and duration. May form a complex with Orco to form odorant-sensing units, providing sensitive and prolonged odorant signaling and calcium permeability. Involved in the behavioral responses to pentanol, hexanol, octanol, nonanol, propyl acetate, butyl acetate, isoamyl acetate, methyl caproate, anisole, heptanal, 2-heptanone, r-carvone, and nonanoic acid. Responds also to pyrazines.