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Tobacco smoke is a mixture of tar and chemical particles with small Download Scientific Diagram Bad Air, Don't Care? Cal Alumni Association Did you know that tobacco use can begin harming a child's lungs before they're even born? This #WorldAsthmaDay, let's talk about the connection between tobacco and asthmaand what we can do about First, second, and thirdhand smoke explained: Why it lingers and spreads indoors IQAir USA

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