Carboxylic Acids

Acetic Acid (responsible for the pungent smell from vinegar)

Butanoic Acid (responsible for the rancid smell from sour butter)

Pentanoic Acid (the odor that contributes to the territorial smell of a cheetah)

Hexanoic Acid (responsible for the bad odor of dirty socks)

Lactic Acid (responsible for the taste of sour milk)

Acetylsalicylic Acid (aspirin)

4-Aminosalicylic Acid (used in the treatment of tuberculosis)

Isotretinoin (used in the treatment of acne)

Formic Acid (contributes to the burning sensation from insect stings)

Propionic Acid

Butyric Acid

Benzoic Acid

Oxalic Acid

Malonic Acid

Pentanedioic Acid

Succinic Acid

Methyl Butanoate (pineapple smell)

Isopentyl Acetate (banana smell)

Butyl Acetate (pear smell