and many more............ just think u r inhaling all of these when u smoke a cigarette.
and even worse side stream smoke(passive smoke) has an even higher concentration of these chemicals cos there's a seive in d cigarette dat reduces d concentration of these chemicals but dat seive does not protect wat is coming out of d other end makin pple dat don't smoke more susceptible to inhaling these chemicals, when u stand close to someone dat doesn't smoke. please it's advisable to quit smoking asap.