I have been using the Vientiane series gas cooker of Wanjiale for a long time, and I haven't found the problem of leaving smoke in cooking.After all, the air volume of this gas cooker is still very large. The lampblack is basically instantaneous, and occasionally I can stir fry. The mode of stir fry air can also be used to smoke very clean. Now the air in our kitchen is much better than before, and there is no odor at all. You can try it.