What are Aroma Chemicals?
Chemicals that impart smell are known as Aroma Chemicals. Usually, they are highly volatile, which makes sense since they are used to provide scents and flavors. Aroma Chemicals must not be confused with aromatic compounds, an organic chemical term used to refer specifically to molecules containing conjugated formated ring systems such as benzene and toluene. A variety of aroma chemicals exist, such as alcohols, esters, aldehydes, terpenes, and ketones. There is a wide variety of aroma chemicals that are commercially used in several industries for adding flavors, fragrances, or even anti-microbial properties.

Important Aroma Chemicals in Perfumery:

Important Aroma Chemicals in Soap Industry:

Important Aroma Chemicals in Cosmetics:

Important Aroma Chemicals in Food & Flavor Industry:

References:
https://www.linkedin.com/pulse/which-aroma-chemicals-widely-used-industries-/
https://www.newdirectionsaromatics.com/blog/products/aroma-chemicals-uses-andapplications.html
https://en.wikipedia.org/wiki/Benzyl_alcohol
https://en.wikipedia.org/wiki/Acetone
https://en.wikipedia.org/wiki/Linalool
https://en.wikipedia.org/wiki/Ethanol
https://en.wikipedia.org/wiki/Ethyl_acetate
https://en.wikipedia.org/wiki/Benzaldehyde
https://en.wikipedia.org/wiki/Camphor
https://en.wikipedia.org/wiki/Formaldehyde
https://en.wikipedia.org/wiki/Dichloromethane
https://en.wikipedia.org/wiki/Limonene
https://en.wikipedia.org/wiki/Musk_xylene
https://en.wikipedia.org/wiki/Vanillin
https://en.wikipedia.org/wiki/Citral
https://en.wikipedia.org/wiki/Cinnamaldehyde
https://en.wikipedia.org/wiki/Coumarin
https://en.wikipedia.org/wiki/Jasminaldehyde
https://en.wikipedia.org/wiki/Benzyl_benzoate
https://en.wikipedia.org/wiki/4-Anisaldehyde
https://en.wikipedia.org/wiki/Benzyl_acetate
https://en.wikipedia.org/wiki/Terpenoid
https://en.wikipedia.org/wiki/Synthetic_musk
https://en.wikipedia.org/wiki/Ethyl_maltol
https://en.wikipedia.org/wiki/Diacetyl