if I recall TCE (is tricholoroethylene the same as 111-trichloroethane?) has significant links to Parkinsons and is classed as a known carcinogen over here in the UK
https://www.medicalnewstoday.com/articles/cleaning-chemical-...
https://www.medicalnewstoday.com/articles/cleaning-chemical-...
Trichloroethylene is [Cl-C-Cl]=[Cl-C-H]
whereas 1,1,1-trichloroethane is [Cl-C-Cl -Cl]-[H-C-H -H]
Trichloroethylene is really evil.
Whereas 1,1,1-trichloroethane much less.