It will not always be possible to protect your children from the habits of other people; therefore, it is important that they also understand why they should not smoke, and why they should try to avoid secondhand smoke. If you are not sure how to best talk to your children about this topic, consider using alternative methods.  Search for videos, which might help your children understand the dangers of smoking and secondhand smoke. Your behavior has a strong impact on your children. Telling your children that smoking is unhealthy, and that they should stay away from people who are smoking when you are a smoker yourself sends a confusing message to your child. Most schools offer an anti-tobacco program, but some may have a less well-developed program than others. Ask your child’s teacher what the school’s program involves, and whether or not they include education about secondhand smoke in their program. If you are not satisfied with the current program, consider asking how you might be able to get involved in improving the program. Simply telling your child that smoking and secondhand smoke are bad does not help them understand exactly why they should not do it.  Explain to them the different ways that smoking and secondhand smoke can harm the body. Use examples to back up your points. If you tell them that smoking is bad for their lungs, you might consider showing them a picture of a smoker’s lungs. Be clear that while choosing not to smoke is the most important thing they can do, avoiding secondhand smoke is also important for avoiding negative health effects. Point out, for example, that even secondhand smoke exposure can lead to lung cancer. Some evidence suggests that children feel pressure to do something simply because they think their peers are doing it too. Though it may be true that much of the pressure a child feels comes from their own minds, they may also, at some point, be pressured by someone else to try a cigarette or other tobacco product. Preparing them for this possibility will help them say...

How would you rephrase that briefly using Vietnamese?
Dành thời gian giáo dục trẻ về khói thuốc thụ động. Làm gương cho trẻ bằng cách cai thuốc hoặc không hút thuốc. Tìm hiểu phương pháp giảng dạy về thuốc lá tại trường học của trẻ. Giúp trẻ hiểu tại sao hút thuốc và ở gần người hút thuốc lại không tốt. Giải thích cho trẻ rằng chúng có thể thấy bạn bè, gia đình hay người nổi tiếng hút thút nhưng không nên bắt chước theo. Cảnh báo trẻ về áp lực bạn bè. Cùng suy nghĩ về cách từ chối để giúp trẻ giải tỏa áp lực. Giúp trẻ tìm cách biện minh lịch sự trong tình huống phải tiếp xúc với khói thuốc thụ động.