I hate using it for extractions, because it smells horrible. Is there some way I could convert it to formaldehyde or some other useful chem?
Give it to Uemura!!!!
Where Uemura lives goverments are concerned about the destruction of the ozone layer. As a consequence you can't buy anymore CCl4 and CHCl3 without a special permission. The last bottle Uemura keeps like a treasure for use only in cases nothing else but CHCl3 can bee substituted for.