Mask hero

Gas mask

Chemical protection

Gas mask hero

Gas hero

Hooded figure

Mysterious figure

Protective gear

Respirator mask

Safety gear

Hazardous environment

Chemical warfare

Hazardous environments

Chemical suit

Protective mask

Figure in gas mask

Contaminated environment

Gas masks

Solitary figure

Masked man

Mystery man

Individual in protective gear

Man with gas mask

Poisonous atmosphere

Environmental warning

Urban setting