La Cornue Grand-Maman 90 Manuel D'utilisation page 46

A gas range cooker emits hot air and humidity. Therefore, it is essential that the space in
which the cooker is used be well vented either by a natural extraction of air or by a mecha-
nical extractor hood.
Intensive or extended use of the oven may require additional airing, for instance by opening
a window, or more efficient ventilation by increasing the mechanical fan power if there is
one.
44