Why does Genetic Contamination pick up debris?

[Uun]

When I'm running Genetic Contamination on my /Bio brute, any nearby debris (robot/armor parts from defeated foes, leaves, etc.) will start swirling around me, similar to Singularity. If I turn off the power, it will settle to the ground, but it will resume if I turn the power back on. There's nothing in the power description that would seem to justify this behavior. 

 

You're capable of breaking down the genetic material of your foes with a powerful toxin that is produced by your Bio Armor. Nearby foes affected by this poison will suffer toxic damage over time as well as dealing reduced damage. While Defensive Adaptation is active this power's damage debuff is increased in effectiveness.

[Psyonico]

I don’t know why it does it, but I’ve got kind of a funny story about it.

 

 Was waiting for a Hami raid to form and I did the eat hotdog emote, which throws a wrapper on the ground.  That thing orbited a bio tank for a full 45 minutes before we actually got started and it got flung off into the distance.