Cooking stoves should be used in well ventilated rooms.
Replace worn out gas tubes.
Management
Identity the cause and act appropriately. If it’s the lack of fresh air, take the person outside to an airy place. If it is due to a polythene bag getting stuck in the head, remove it.
Check the airways are open and the casualty is breathing.
If breathing has stopped, start artificial respiration.
Take casualty to hospital for further assessment and management.