The last few days i have noticed whisps of smoke about ten inches to a foot long and approximately 3 inches wide in the middle with tapered ends. They started out white but seem to be taking on the color of whatevers around them now and thats what prompted me to post. Because they are changing. They alwayz appear about 4 feet off the ground and just outside of my direct line of vision, whether it be up, down or side to side. Anyone experienced this before?