How to balance my big promotion with my health?

I am going to be promoted at the end of my term to a team leader within my company (an educational provider in China). I’ve been here 4½ years and have had promotion offers before but for companies I didn’t like.

Now I’m with a company worth working for, but the biggest problem is my fellow team leaders are all smokers (In China, cigs are cheap and very popular). I will be required to sometimes attend dinners with a large amount of smoke. It killed me this weekend-I got a bit of a respiratory infection as a result.

I am a libertarian that believes in personal freedoms, but ones that make me personally sick really suck. Can you give me some suggestions?