2007 Toyota Camry blows blizzard of white powder from A/C, is it health hazard? on 2007 Toyota Camry

My 2007 Toyota Camry A/C blows white powder from vents. It gets in drink sitting in cup holder and covers black blazer for important sales calls. It seems to make me itch and feel a little funny.
Is it a health hazard? If so, I plan to park it and contact an attorney.

Asked by for the 2007 Toyota Camry
Possible rodent chewed up your cabin filter and it's letting the debris blow through the vents.