Modifiers matching aldehyde:

• strong,
• volatile,
• uncharged,
• heterocyclic,
• reactive,
• molecular,
• hydrophilic,
• aliphatic,
• airborne,
• bulky,
• toxic,
• carcinogenic,
• simple,
• ordinary,
• light,
• active,
• aromatic,
• unsaturated,

Simple categories matching unsaturated:

• polymer,
• hydrocarbon,
• compound,
• material,
• carotenoid,
• component,
• gas,
• pigment,
• substrate,
• oil,
• fat,
• steroid,
• amide,
• derivative,
• group,
• resin,
• acid,
• nitrile,
• solvent,
• substance,
• ketone,
• alcohol,
• aldehyde,
• ester,
• color,
• isocyanate,
• terpene,
• monomer,
• system,