I think the only way you can get a really good one for your situation is to make it yourself. However, duct tape isn't the only way to do it. Threads magazine has shown something like 7 different methods over the years:
http://www.threadsmagazine.com/item/...tom-dress-form
Water-activated paper tape shouldn't have the fumes problem you encountered, and there are several Youtube videos that show how to do it. Here's one of the better ones I found:
https://www.youtube.com/watch?v=YNkp4zLUuRE
She ends up smoothing it out with Mod Podge, and says she used less than a roll of packing tape (300 ft) to make it. The portion with the model in the form took about 1 and 1/2 hours.