A person wearing a warm hat and a protective face mask stands out against a backdrop of hazy, crowded city streets.
Palabras clave
smog,
pollution,
mask,
pedestrian,
city,
winter,
haze,
street,
urban,
health,
protection,
air,
quality,
people,
fog,
public,
cold,
traffic,
commute,
foulard,
coat,
grey,
environment,
respiratory,
safety,
walking,
tied-up,
visibility,
contamination,
emission,
crowded,
atmosphere,
concern,
caution,
epidemic,
preventative,
layer,
breathing,
vehicle,
overcast,
metropolitan,
face,
covered
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