Modifiers matching preservative:

• weak,
• cheap,
• harmless,
• natural,
• chemical,
• bad,
• acid,
• traditional,
• carcinogenic,
• artificial,
• common,
• raw,
• liquid,
• organic,
• harmful,
• nasty,
• unhealthy,
• dangerous,
• hazardous,
• wholesome,
• toxic,
• special,
• synthetic,
• waterborne,
• antimicrobial,

Simple categories matching carcinogenic:

• estrogen,
• contaminant,
• substance,
• metal,
• process,
• solvent,
• residue,
• compound,
• condition,
• pesticide,
• chemical,
• agent,
• event,
• component,
• pathogen,
• aldehyde,
• particle,
• material,
• mycotoxin,
• fiber,
• gas,
• preservative,
• hydrocarbon,
• habit,
• mixture,
• toxin,