Bee Yard Safety

When it comes to safety around bees, there isn't much I know. The most interesting things I found about bee safety is that bees can track CO2 so they often head for the face or ankles. Another thing I found interesting is that the smell of caffeine and sweat can offend bees, and that white calms bees while black does the opposite. Next time I am in the garden/apiary I will try to look for how bees act depending on the weather. I find it interesting how bees are more irritated when it is cloudy. A question I have is how does smoke calm the bees?