In a chimney flue, a damper closes off the flue to keep the weather (and birds and other animals) out and warm or cool air in. This is usually done in the summer, but also sometimes in the winter between uses. In some cases, the damper may also be partly closed to help control the rate of combustion.
A little more detail will help us answer your question. If your snacks are pretzels, potato chips, dried fruit or other dry goods, you can take them in your carry-on or checked bag. Snack items that are liquids or gels, like pudding, jello or yogurt, etc., falls under the 3-1-1 rules for liquids for carry-on bags. They can be transported in checked bags.
Carry-on Restrictions. You can bring alcohol on your flight with you if you keep portions of 3.4 ounces or less in your quart-sized plastic bag with your toiletries. Most miniature nip bottles are 1.7 ounces, so you can bring alcohol in this form on your flight.In international airports, alcohol purchased at the duty free store can be carried on your flight if it is given to you in a tamper-proof bag with a receipt or sent to the duty free desk at your departure gate.uying something in a duty-free store when traveling outside the country does not automatically mean you can bring it back into the United States. Beverages that are more than 70 percent alcohol by volume can not be packed in your luggage.