It shall be unlawful for any person to operate any stationary engine within the corporate limits of the city should the engine give forth through its exhaust or otherwise, obnoxious, ill, unwholesome, or unhealthful odors, unless the engine has attached thereto, adequate and sufficient equipment for the disposition of any odors emanating from the exhaust or otherwise, so that the odors shall not interfere with the comfort and welfare of the citizens in the vicinity where the engine is located.
('58 Code, § 31.50) Penalty, see § 10.99