Everybody knows that smoking gives you cancer and second hand smoke has damaging effects. Exposure to tobacco smoke immediately affects proper functioning of the heart and often leads to heart diseases and complications. Many smokers actually die of heart disease, not cancer.
But what about other substances?
In an experiment that exposed rats to either tobacco smoke or marijuana smoke, it was found that function level dropped 70% after 30 minutes of exposure to both marijuana and tobacaao. When THC and nicotine were removed from marijuana and tobacco respectively, the same results held.
These findings suggest ANY kind of smoke, even from a campfire, can cause cardiovascular complications.