gas mask

noun 0.766

oxygen tank

noun 0.718

oxygen tent

noun 0.716

mask

noun 0.714

oxygen bottle

noun 0.694

surgical mask

noun 0.686

dust mask

noun 0.681

oxygen cylinder

noun 0.676

diving mask

noun 0.675

oxygen

noun 0.674

oxygen therapy

noun 0.669

oxygen gas

noun 0.653

facemask

noun 0.641

oxygenator

noun 0.637

respirator

noun 0.636

ski mask

noun 0.629

masker

noun 0.611

rebreather

noun 0.568

ventilator

noun 0.568

mascara

noun 0.553

molecular oxygen

noun 0.553

oximeter

noun 0.550

air purifier

noun 0.546

masking

noun 0.544

nebulizer

noun 0.542

maskant

noun 0.541

hyperbaric chamber

noun 0.540

photomask

noun 0.539

oxide

noun 0.539

air pump

noun 0.538

oxygen demand

noun 0.536

hyperoxia

noun 0.532

inhaler

noun 0.532

air filter

noun 0.526

ozone

noun 0.523

space suit

noun 0.522

dioxygen

noun 0.521

helmet

noun 0.520

oxygenase

noun 0.511

hypoxia

noun 0.508

hazmat suit

noun 0.504

sleep apnea

noun 0.502

air mattress

noun 0.502

oxygen debt

noun 0.502

humidifier

noun 0.501