Effects of tobacco smoke on plant health
Results from the peppermint plants study show that all the peppermint plants contain minor amounts of nicotine before treatment, but the experiments revealed that the plants also incorporate nicotine considerably from the soil as well as from tobacco smoke. These findings demonstrate for the first time that the reported occurrence of nicotine indeed may originate from tobacco. The incorporated nicotine was subsequently metabolized by the plants.

Effects: 
Apart from the nutritional aspects, the results on nicotine uptake may also affect basic plant biology, because they demonstrate that alkaloids can be transferred from one plant, after its death, to another plant species.


  The plants, said Dirk Selmar, the study’s lead author, appeared, at
  first, to be unchanged. “As far as we have seen, there have been no
  negative effects on the growth,” he wrote in an email. Yet, tests for
  nicotine, conducted at various stages in the plants’ life, found that
  they had “tremendously elevated nicotine levels,” Selmar said.


References:

https://link.springer.com/content/pdf/10.1007%2Fs13593-015-0298-x.pdf
http://www.takepart.com/article/2015/04/15/nicotine-plants-second-hand-smoke
https://www.ehow.com/info_7987584_effect-cigarette-smoke-house-plants.html

some anecdotal answers (to be taken with a grain of salt) on your 2nd bonus question: https://www.rollitup.org/t/is-smoking-weed-around-a-growing-plant-bad.182179/