I borrowed a lawnmower from work.  The guy put oil/gas mix in the gas tank then decided to clean the filter for me, he used engine cleaner than started to shake it off to dry it.  He then used a propane torch to dry the filter which naturally caught fire.  He threw it on the ground and started blowing on it. I took the hose from the air compressor and blew the thing out.  His response:damn I forgot that shit burns.