Orange biohazard symbol
<a href="//commons.wikimedia.org/wiki/User:Nandhp" title="User:Nandhp">Nandhp</a>
Based on <a href="//commons.wikimedia.org/wiki/File:Biohazard_symbol.svg" title="File:Biohazard symbol.svg">File:Biohazard_symbol.svg</a> (PD)