GAS - Fumes.
ca: GAS - Fums.
es: GAS - Humos.
In pottery there are gas kilns, which for large industries are the most economical. When firing using whatever type of kiln, fumes called gases are produced, some of which are very strong. These are not caused by using gas but by the burning of the products in the kiln; clay and transfers expel strong gases.
Read more about: Chimney / Kiln – Ventilation