dirty fan showing polluted air in the interior of the house, hazardous environment for allergy sufferers

air allergy appliance appliances asthma bacteria bacterial blade blow blower blowing breeze care conditioning cooler dangerous device dingy dirt dirty disease dust electric environment fan filter filthy freshness front hazardous health home hot house household hygiene indoor infection interior maintenance messy parasite plastic polluted pollution quality regular requiring respiratory service showing sufferers summer temperate turbine unclean vent ventilator wind