Modifiers matching allergen:

• airborne,
• common,
• allergic,
• systemic,
• single,
• fine,
• possible,
• american,
• environmental,
• microscopic,
• natural,
• animal,
• dietary,
• outdoor,
• indoor,
• major,
• unique,
• rare,
• new,
• relevant,
• potential,
• cutaneous,
• unhealthy,
• out,
• particular,
• seasonal,
• organic,
• reactive,
• identifiable,
• harmful,
• harmless,
• outside,
• important,
• familiar,
• inhalant,
• perennial,
• special,
• large,
• strong,
• cereal,
• individual,
• typical,
• additional,
• active,
• respiratory,
• size,
• home,
• nasty,

Simple categories matching possible:

• infection,
• use,
• cause,
• hazard,
• residue,
• activity,
• ingredient,
• place,
• feature,
• substance,
• condition,
• contaminant,
• opposition,
• lesion,
• surface,
• emotion,
• chemical,
• pathology,
• material,
• sport,
• disorder,
• entertainment,
• virus,
• allergen,
• list,
• interaction,
• specification,
• disease,
• syndrome,
• eruption,
• problem,
• abrasive,
• poison,
• comfort,
• complication,
• state,
• difficulty,
• area,
• entity,
• toxin,
• morbidity,
• symptom,
• volatile,
• career,
• inflammation,
• way,
• predator,
• assistant,
• extra,
• group,
• germ,
• modification,
• artifact,
• bacteria,
• transformation,
• form,
• fuel,
• pathogen,
• motion,
• change,
• service,
• catalyst,
• contamination,
• parasite,
• action,
• agent,
• pollutant,
• facility,
• antigen,
• system,
• information,
• equipment,
• acid,
• procedure,
• precipitant,
• process,
• organism,
• defect,
• precursor,
• development,
• theme,
• substrate,
• nexus,
• occurrence,
• reaction,
• catastrophe,
• means,
• accident,
• injury,
• animal,
• danger,
• illness,
• conflict,
• metal,
• layer,
• work,
• solution,
• fluid,
• evidence,
• situation,
• error,
• rodent,
• failure,
• toxicant,
• sector,
• impurity,
• piece,
• thing,
• disaster,
• usage,
• market,
• disturbance,
• intermediate,
• sentence,
• prey,
• mechanism,
• protease,
• indication,
• incident,
• target,
• request,
• malady,
• event,