acridest
ac-rid-est
adjective
Having the most intensely bitter, pungent, or irritating taste or smell.
"The acridest smoke filled the air after the chemical spill."
Thesaurus
Synonyms: acerb, sulphurous, vitriolic, unpleasant, blistering, acrid, caustic, acerbic, sulfurous, virulent, bitter, acid