Simple categories matching airborne:

• vehicle,
• agent,
• contaminant,
• hydrocarbon,
• particle,
• insect,
• system,
• disease,
• animal,
• bacteria,
• condition,
• substance,
• aldehyde,
• infection,
• microorganism,
• allergen,
• metal,
• waste,
• germ,
• predator,
• material,
• impurity,
• pollutant,
• feeder,
• gas,
• event,
• armament,
• matter,
• debris,
• contagion,
• abrasive,
• sensor,
• particulate,
• item,
• trauma,
• illness,
• chemical,
• pm,
• component,
• image,
• contamination,
• pathogen,
• conveyance,
• constituent,
• compound,
• aerosol,
• prey,
• vessel,
• sound,
• device,
• object,
• pollution,
• toy,
• fiber,
• craft,
• pest,
• bug,
• creature,
• dust,
• unit,
• platform,
• virus,
• hazard,
• medium,
• organism,
• thing,
• seed,

Members with property airborne:

• radar,
• mold,
• flea,
• pollen,
• dust,
• reentry_vehicle,
• errant_rock,
• sars,
• smoke,
• store_separation,
• bacteria,
• dirt,
• projectile,
• iron_hydroxide,
• sand_grain,
• tea,
• lint,
• grass_clipping,
• gas,
• fumes,
• cigarette_smoke,
• lighting_stroke,
• zn,
• acetone,
• virus,
• radar_system,
• typhoid,
• plutonium,
• building_stone,
• cottonseed,
• particulate_matter,
• fertiliser_spray,
• fo,
• various_fiber,
• soil_dust,
• staphylococcus,
• rotavirus,
• rain,
• sea_salt,
• wood,
• heavy_molecule,
• gps,
• chicken_pox,
• tire_rubber,
• biogenic_ammonia,
• satellite,
• airborne_silica,
• butterfly,
• process_compound,
• chickenpox,
• orbiting_satellite,
• legionnaire_disease,
• pyrotechnic_display,
• radon_gas,
• tar,
• grease,
• snow,
• sawdust,
• road_fumes,
• mosquito,
• asbestos_fiber,
• coke_dust,
• industrial_dust,
• water,
• glider,
• pigment,
• grit,
• tuberculosis_tb,
• radioactive_dust,
• aircraft_cannon,
• aeroplane,
• staph,
• petrol_fumes,
• fur,
• skin,
• co2,
• carryall,
• jet_aircraft,
• navigation_system,
• paper_dust,
• combustion_pollutant,
• owl,
• rock_dust,
• ammonia,
• combustible_fumes,
• certain_grass,
• airplane,
• cold,
• phenol,
• unmanned_drone,
• organic_amine,
• bactericide,
• vapour,
• surveillance_radar,
• copper,
• solid_particle,
• bird_feather,
• insecticide,
• waste,
• trichloroethylene,
• harmful_dust,
• soot,
• cu,
• peroxide,
• influenza,
• music,
• egret,
• asthma,
• cresol,
• transport_airplane,
• particle_size,
• dirigible,
• chlorine,
• industrial_pollution,
• second-hand_smoke,
• grasshopper,
• impact_sound,
• complex_gas,
• helicopter,
• nitrous_oxide,
• alkane,
• toluene,
• pollutant_gas,
• protease,
• pesticide,
• song,
• sciarid,
• various_dust,
• industrial_particle,
• mildew,
• secondhand_smoke,
• cooking_smoke,
• avian_flu,
• nitrogen-oxide_no,
• missile,
• plasticizer_fumes,
• spray_adhesive,
• nickel,
• industrial_effluent,
• cyanide,
• pb,
• parvo,
• cigarette,
• concrete_dust,
• hawk,
• lunar_dust,
• aerosol_spray,
• road_debris,
• formaldehyde,
• beryllium_oxide,
• tuberculosis,
• beryllium,
• ricin,
• insect,
• dust_mite,
• radar_altimeter,
• actinomycete,
• indoor_mold,
• methane,
• birch_seed,
• paint_fumes,
• vapours,
• particle,
• volatile_compound,
• radar_cooling,
• ore_dust,
• seed,
• cholera,
• silver,
• uranium,
• sarin,
• fumigant,
• pathogen,
• mumps,
• chloride_salt,
• listeria,
• hospital_superbug,
• sars_virus,
• ballistic_missile,
• typhus,
• cement_dust,
• carbon,
• respiratory_infection,
• pollen_allergen,
• midge,
• freon,
• environmental_pollutant,
• acid_gas,
• eagle,
• waterborne_contaminant,
• cloud,
• blackfly,
• varicella,
• butene,
• metal_fumes,
• dust_mold,
• biological_particle,
• coal_dust,
• bronchitis,
• np,
• carpet_cleaner,
• ball,
• fungal_pathogen,
• radioactive_material,
• wood_dust,
• laser_radar,
• lidar_detection,
• ash,
• aircraft,
• aerosol,
• glass_cleaner,
• floating_dust,
• bird_droppings,
• fm,
• voice,
• pertussis,
• sickness_bug,
• waste_water,
• fine_dust,
• excrement,
• abrasive_particle,
• hail,
• aircraft-engine_controller,
• pulmonary_aspergillosis,
• bird_flu,
• anthrax,
• blimp,
• fungi,
• microwave_scanner,
• gnat,
• rocket,
• loud_music,
• avian_influenza,
• cold_virus,
• bacterial_product,
• fallout,
• insulation_fiber,
• sulphate,
• cement,
• soil_factor,
• moth,
• pollen_grain,
• silicone,
• cadmium,
• mold_fungi,
• silica_dust,
• pneumonia,
• dry_skin,
• polio,
• hydrogen_sulphide,
• chemical_dust,
• bronchiolitis,
• windblown_dust,
• rock,
• lead_paint,
• martin,
• common_cold,
• plane,
• organic_molecule,
• fiber,
• tb,
• pollutant,
• metal,
• transition_metal,
• boric_acid,
• leaf_particle,
• dolomite,
• chromium,
• tree_allergen,
• cotton_dust,
• spark,
• radium,
• blast_fumes,
• debris,
• caustic_gas,
• rubeola,
• calcareous_dust,
• cat_flu,
• microbial_toxin,
• chemical,
• agricultural_dust,
• oxygen,
• amine,
• tobacco,
• airborne_division,
• silicosis,
• clothing_fiber,
• hydrogen-sulfide_gas,
• paint,
• combustible_gas,
• textile_dust,
• respiratory_virus,
• vocal_noise,
• paint_particle,
• don-quixote_race,
• route_design,
• yeast,
• video,
• hiv,
• frisbee,
• rubella,
• certain_strain,
• spray_fixative,
• light_plane,
• arsenic,
• odor_coffee,
• kite,
• nasa,
• leaf,
• gravel,
• fighter,
• octane,
• lacquer,
• flu_virus,
• fungicide,
• vinyl_chloride,
• tabun,
• harpy,
• pvc,
• cat,
• chemical_fumes,
• amide,
• distemper,
• cancer,
• airborne_bacteria,
• dryer_lint,
• long_section,
• dengue,
• soil,
• smoke_particle,
• late_blight,
• spray,
• paint_spray,
• pneumococcus,
• pulmonary_tuberculosis,
• aromatic_hydrocarbon,
• drone,
• feather,
• animal_allergen,
• toxin,
• traffic_fumes,
• natural_dust,
• fluoride,
• flying_debris,
• volcanic_ash,
• silica,
• ozone,
• manganese,
• industrial_fumes,
• papilloma_virus,
• cockroach_allergen,
• missile_stage,
• mercury,
• perfume,
• particulate,
• toxic_gas,
• small_sand,
• toner_powder,
• dioxin,
• limestone,
• vapors,
• sulfate,
• tobacco_smoke,
• free_silica,
• airship,
• dragonfly,
• bat,
• reconnaissance_drone,
• harmful_gas,
• active_tb,
• allergen,
• asbestos_dust,
• tobacco_dust,
• barium,
• americium,
• dust_particle,
• germ,
• viral_meningitis,
• bomb,
• aluminum,
• meningitis,
• influenza_virus,
• drywall_dust,
• fabric_fiber,
• solvent_fumes,
• cleaners,
• carbon_dust,
• fine_ash,
• trachoma,
• lotion,
• road_spray,
• hair,
• chemical_vapors,
• traffic_noise,
• road_dust,
• zinc,
• salt_water,
• hepatitis-b_virus,
• mist,
• protein,
• propionaldehyde,
• smoke_emission,
• salmonella,
• salt,
• missile_seeker,
• office_chemical,
• weeds,
• co,
• smallpox,
• weed,
• propanal,
• asbestos,
• vapor,
• homing_pigeon,
• lidar,
• balloon,
• sand,
• measles,
• gaseous_contamination,
• no,
• light_infantry,
• acid,
• acetaldehyde,
• hydrocarbon,
• cottonwood_seed,
• cricket,
• legionella_bacteria,
• mechanism,
• asbestos_particle,
• tuberculosis_bacteria,
• cat_allergen,
• organic_material,
• particulate_contaminant,
• metal_dust,
• aircraft_drone,
• wood_resin,
• john_ward,
• diphtheria,
• acoustic,
• blowing_sand,
• oil,
• jet,
• grass,
• household_dust,
• sulphide,
• infectious_agent,
• wind_noise,
• enemy_missile,
• pollutant_particle,
• lead,
• legionella,
• fine_particle,
• diesel_fumes,
• flu,
• microorganism,
• biological_hazard,
• kiln_dust,
• mycobacterium,
• litter,
• raptor,
• protozoa,
• animal_fur,
• latex_allergen,
• rodeo_roping,
• respiratory_tuberculosis,
• malaria,
• bird,
• biological_pathogen,
• nicotine,
• benzene,
• heavy_dust,