Remove dangerous substances from (13)
I believe the answer is:
decontaminate
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">remove dangerous substances from</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for decontaminate that I've seen before include "Remove the bad" , "Purify; make safe" , "Remove pollution from" , "Remove dangerous substance from (something)" , "Remove dangerous substances from" .)