I had one of those round free standing kerosene heaters running in the front room. I went in my storage room to get a book I needed while rumaging around in there I closed the door behind me. After a minute or 2 I started to smell something,I thought I must have disturbed a container of something but I couldnt figger what after another 2or 3 minutes it hit me it was "smokey" smelling I opened the door to a wall of thick blackness . I thought the house was burning down,Couldnt see anything ,slammed door shut grabbed flash light and prepared to run thru the flames and out the door.Checked door ,door wasnt hot . Away I went out the front door stood there for a few seconds with black smoke pouring out of house . Ran around the house peering in the windows nope no flames. smoke has cleared out a bit and I can see under it that its the heater smokeing elaped time from closing door about 5 minutes from dicovering smoke maybe 1. Run in shut off heater and drag it out . Grab box fan and set it in door pointed in to ventalate the house . Now the houses insides are coverd with soot not black but everything I touch gets ya grimey and when ya wipe stuff off it it smears. And every cobweb in the house sure stands out! Any Ideas on how I clean this stuff up?