smoking culture in my office

There is one thing i cannot get used to it for these few months in my office, which is smoking culture. From the first day i stepped into this office, i found that ppl love to love, either guy or girl....a mother too. Smoking culture not only an event in my office, but also meeting. They smoke in the meeting room, hor???
There is a door behind me which link to the back lane, they love to invite ppl and hv smoking meeting, the love to do that, about 3-4 times per day.
Another smoking hour is lunch time. One cigarette after meal is good for health??? haha...
Actually they are nice ppl, jz addicted with cigarette. Sometime i feel that im weird coz i dun smoke...haha..but i worried bout my lungs condition too....coz 2nd hand smoke is not good for me.....