Passive smokers can inhale many of the same harmful smoke components as active smokers.

### Why this is right The material explicitly states that active and passive smokers inhale many of the same harmful components. The difference is that passive smokers take in smoke involuntarily from nearby smokers. ### The concept Secondhand smoke is not harmless simply because it comes from another person's tobacco use. It can contain nicotine, tar, carbon monoxide, and other toxins. Inhaled toxins can irritate the airways and contribute to reduced lung function. Avoiding exposure is therefore relevant to people who do not smoke themselves. ### The concept The words active and passive describe the route into the person's life, not a division between toxic and non-toxic smoke. The material also emphasizes vulnerability among children and older adults. ### Terms - **Passive smoking**: Involuntary inhalation of smoke from other people's tobacco use. - **Toxin**: A harmful substance that can damage or disrupt the body's normal function. ### Remember A person can be harmed by tobacco smoke without choosing to smoke.