I think you will find that this is because of the excessive water content of meat nowadays. This all vaporises, leading to the aforementioned cloud, which eventually disperses. On a warm summer's day go up high with a pair of binoculars, and you will see thousands of little cloudlets hovering over gardens with BBQs; elsewhere it is still a nice warm, clear day.
The same holds for washing that you hang out; paddling pools, etc.