man wearing a real anti-pollution, anti-smog

air allergy antipollution antismog backpacker bacteria bags big block breath casual commute copy dense dust environment escape explore face flu guy harmful harzardous haze holding illness immune individuality infection influenza isolated male man mask medical mist nature pollutant pollution prevention protection protective real respiration safety seroious sick smog sneeze space square standing strong survivol travel traveler urban viruses wall wearing youg