You would have to let the poly air-out for a period of time, as it outgasses. Wait until several days or weeks have past since you could last smell the stinking fumes.
I use Zero VOC latex acrylic paint.
My personal test is: would I let a newborn baby (assuming I like babies) sit on it, lick it, crawl on it, etc? if yes, then its probably okay for chameleons.