At low concentrations, phosgene gas is said to smell like grass, musty hay and green corn. This interpretation sets the scene for a striking, historical wartime experience.

The formula for this scent was updated in February 2026.

AromaPrime fragrance oils are specifically and solely for diffusion into the air using AromaPrime dispensing options. We cannot guarantee their safety or effectiveness if they are used with equipment not provided by the company or used in a manner other than as directed.

Aroma Prime Oils are solely for fragrance diffusion into the air – they are not for skin contact, product ingredients, flavoring or candle making.