An employer must ensure that every room, cabinet or enclosure to be fitted with an efficient intake and exhaust ventilation system to remove any vapour therefrom and to prevent its re-circulation in
a manner which may lead to the contamination of any other workplace or the creation of a fire or explosion hazard: Provided that, an employer must provide every employee doing spraying with a respirator, mask or breathing apparatus of a type approved by the chief inspector, and that any such employee must while spraying use such apparatus provided to him.