Article: If you find yourself in a place that has a lot of smokers, try to find areas where there is less smoke. Many public places have designated smoke-free areas, so you should seek these out. Sometimes people smoke in places they shouldn't, like restaurants or bars where smoking has been banned. In these cases, it's appropriate to ask an authority figure -- a restaurant manager or police officer, for instance -- to tell the smoker to stop. If you cannot get away from smokers, try to place yourself upwind of them. This will not completely protect you from secondhand smoke, but it can help you to breathe in less than you would if the wind were blowing the smoke towards you. When walking past smokers in public spaces, try to move past them as quickly as you can. This will help limit your exposure to secondhand smoke. Cigarette smoke is harmful to people's immune systems. If you're around smokers and cannot get away, do your best to stay hydrated. Keeping hydrated will help your immune system to stay active in spite of the smoke. If you know you're going to be in a smoky environment for a while, bring a water bottle with you. You should do your best to get plenty of vitamin C if you're around smokers. Like staying hydrated, vitamin C helps promote a healthy immune system. You can get vitamin C from foods like oranges and strawberries or from vitamin supplement pills, which you can usually find in any drug or grocery store.
What is a summary of what this article is about?
Find smoke-free areas. Report smokers in appropriate situations. Stand upwind of smokers. Walk past smokers quickly. Stay hydrated. Get plenty of vitamin C.