&gt; Furthermore &quot;cap the bottle TIGHTLY, and shake it up&quot; should set off alarm sirens for anyone who&#x27;s ever heard of a dry ice bomb (what teenager hasn&#x27;t?)<p>Those are also appropriate instructions for a glow stick, where you break an interior container and then shake the stick to mix the two liquids.  So I don&#x27;t think someone expecting to make a glow stick would consider anything amiss here.