Exposure to second-hand smoke is bad too
Second hand smoke is formally known as Environmental Tobacco Smoke or ETS. People who inhale second hand smoke are called passive smokers. And here is the shocker -- passive smoking can be even more dangerous than smoking a cigarette!
Why is this so? The reason is that tobacco smoke enters the lungs of passive smokers without any filtering at all. This makes it much more likely that passive smokers will develop 肺癌咳嗽 -- a bigger payload of dangerous carcinogens enters their lungs.
Many countries including America, Australia, the UK and others have sought to curb the menace of second hand smoke by banning smoking in public places like restaurants, buses, trains, aircraft, etc. More and more countries around the world are taking similar steps. It is expected that these restrictions will gradually bring down the incidence of lung cancer (and many other health issues) from passive smoking.
