Ambu utawa ganda iku saka anané dat kimia, lumrahé wujud wujud gas kanthi konsèntrasi èncèr (cendhèk), kang ketampa liwat indra pangambu. Ambu bisa wujud ambu kang sedhep utawa ambu kang kurang énak. Aroma kang énak asring dianggo sajeroning panganan, pewangi ruangan, parfum, bumbu masakan lsp.

Rupa-rupa ambu 
 Apek: Kringet, pakeyan kotor
 Arum utawa wangi: Kembang, parfum
 Amis: Iwak mentah, getih
 Bacin utawa basin: Iwak bosok, paceran
 Langu: Mbako
 Pesing: Ompol
 Prengus: Daging wedhus mentah
 Sengak: Kandhang kéwan
 Tengik: Pacitan kang wis kadaluwarsa, kaya ta: wajik, klethikan, lsp.

Pranala njaba 
 Odors categorized by main chemical constituent and organized by odor class, percept, etc.
 Odors can be quantified for applications in industry such as a manufacturer wanting to control emissions to reduce complaints from neighbors and to conform with governmental environmental regulations 
 research into odors

Pangambu