Simple categories matching airborne:

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

Members with property airborne:

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