Stomatas open and close at different times depending on the plant's needs and outside conditions. In a very humid environment the stomatas will be wide open to transpire as excess moisture so the plant can continue to feed. In a very dry environment the stomata will close to conserve water. This is only one function of the stomata.
I'm not sure the effect of smoke on the stomata but smoke contains a lot of toxins that are not good for plants.
lol, you guys kill me!! I was wondering similar, but TV - if showing Jerry Springer to my plants would make them more agro and want to be bigger than the next guy, err plant??