mine never melted, never lost shape, nothing. stayed same. Never smelt any fumes. I seriously think if it does release fumes, it does it so slowly that it won't hurt me any more than anything else we encounter in our daily lives. Though my design wasn't smoothest or anything so my high end wasn't that great, but my homemade intake beats the CTA intake in low end because of less heat transfer and smaller diameter. If it anyone wants it, I'll sell it for real cheap, comes with filter.
