In daily life, the harm caused by smoking behavior is not only limited to the smoker itself, secondhand smoke and third-hand smoke are more like hidden "health killers", silently threatening the health of others, especially children with weak immunity. Knowing their dangers is an important step in protecting your family's health. Secondhand smoke is a mixture of smoke emitted from the burning end of a cigarette or other tobacco product and exhaled by the smoker. It acts like an invisible "health assassin" that can cause damage regardless of the length of contact. The World Health Organization has made it clear that there is no safe level of exposure to secondhand smoke, and even brief exposu... [Read more]