悪臭[akushuu] stink
異臭[ishuu] offensive smell
激臭[gekishuu] strong odor
古臭い[furukusai] stale
胡散臭い[usankusai] suspicious looking

口臭[koushuu] bad breath
邪魔臭い[jamakusai] troublesome
臭い[kusai] stinking
臭いものにふた[kusaimononifuta] looking the other way
臭気[shuuki] bad smell

麹黴[koujikabi] yeast plant
青黴[aokabi] blue mold
黴菌[baikin] germ
黴臭い[kabikusai] smelling of mold
黴雨[baiu] rainy season

黴毒[baidoku] syphilis
黴る[kabiru] to become moldy or musty (mouldy)
黒黴[kurokabi] black mold
黴が生える[kabigahaeru] to get moldy