That's kind of interesting. I never thought about this, especially the fact that it could definitely effect workrate and match pacing.
Edit: Form Lance's Q&A last month on his website:
Q: Are any guys on the roster Smokers, and if so does it affect their performance?
A: I think I’ve seen Big Show smoke once but with that possible exception, I don’t think any of the boys do. Vince is VERY anti-smoking, and most arenas are non-smoking so it wouldn’t be easy to smoke at work anyway. A lot of Japanese wrestlers smoke. I was amazed at home many of them did when I worked over there. I imagine it would be very detrimental to your wind in a match as smoking is very bad for your lungs. This business is hard enough on your body without further destroying it by smoking.
Good job Vince.