Environmental hazard

Gas mask

Safety gear

Protective gear

Personal equipment

Hazardous environments

Toxic environments

Mask on face

Protective equipment

Safety measures

Respiratory protection

Personal protective equipment

Air pollution

Environmental hazards

Respirator protection

Toxic air

Chemical warfare

Toxic substances

Protection gear

Chemical protection

Toxic fumes

Airborne toxins

Respirator mask

Science fiction

Face mask

Safety precautions