Re: I can't take it anymore! Wife smokes, I don't. Tips are welcome!
For better or worse ....
You've got to be honest and let her know how smoking makes you feel. You have an uphill battle if you think you can make her change; she will not be able to quit until she is ready. Your nagging will only make things worse for both of you; indeed, your nagging could lead to a divorce. Instead, work on accepting her smoking (temporarily); you have control over your emotions and behaviors. Work on what is within your control.
Many women quit smoking when they become pregnant. My wife was a smoker for about 20 years before she quit when she became was pregnant. She has been a non-smoker ever since. If your horizon includes children, then the end of her smoking may be insight.
Good luck and I hope you can be patient.