Dangerous conditions

Gas mask

Protective gear

Respiratory protection

Air pollution

Polluted environment

Hazardous environment

Hooded figure

Face mask

Safety gear

Respirator mask

Safety measures

Toxic environment

Environmental hazards

Safety precautions

Toxic gas

Exposure prevention

Emergency gas

Hazardous air

Hazard response

Chemical spill

Respirator protection

Pink trees

Science fiction

Survival kit

Dark smoke