wojtek smoking cigarettes Corporal Wojtek: The Beer-Drinking, Cigarette-Eating, Ammunition-Carrying Bear of World War II Wojtek: The Bear of War

So, it is best to avoid it no matter what

Certainly, when travelling internationally, it's usually necessary to let customs know if you're carrying cigarettes

National Institutes of Health's definition for a "risky drinker," meaning someone who drinks heavily on at least five days each month

She agreed that "no amount of smoking is safe." She said that quit-smoking efforts can work, but "true success is to avoid [initiating] tobacco exposure altogether." SOURCES: Patricia Folan, DNP, director, Center for Tobacco Control, Northwell Health, Great Neck, N.Y

Hair straighteners can be packed in both checked and carry-on luggage