Whenever it shall be called to the attention of the director of public health that a dwelling is infected with a contagious disease or that it is dangerous due to inadequate ventilation and otherwise unsanitary and likely to cause sickness among the occupants of such building, the director of public health shall make an inspection of such building and if he finds that such building is in truth and fact infected with a contagious disease or that it is dangerous due to lack of ventilation, or is otherwise in an unsanitary condition and likely to cause disease, then the director of public health shall issue an order to the owner or agent, directing such owner or agent to disinfect or decontaminate the building and to otherwise remedy any defects he finds and upon the failure on the part of the owner or agent to conform with this order within 10 days, the director of public health shall direct that the building be vacated, if occupied, and that it remain vacant until the conditions set forth in the order are corrected in conformity with this article or any provisions of this code or other ordinances of the city, and if the owner or agent shall not have remedied the conditions complained of, the occupant or occupants shall be notified by the director of public health to vacate the premises within three days, unless the director of public health shall quarantine the entire premises and the occupants thereof, and it shall be unlawful and an offense of any occupant to fail to comply with the notice or order so issued. (Code 1941, Art. 49-11; Ord. Nos. 4404; 8049)