3Doodler plastics have been tested for heavy metals, and have undergone full toxicological risk assessments, passing each and every test. Some users notice a slight "plasticy" smell when using ABS. Many users prefer the smell of PLA, which, being corn based, can smell like popcorn or syrup. No matter what material you're using, and whether you're using a 3Doodler or a traditional 3D printer, we recommend working in a ventilated area.
To ensure you are using the right plastics for your 3Doodler, please feel free to check out our compatibility chart here: www.the3doodler.com/compatibility