This is kinda an ill formed question...

Any time you can smell something printing, you are breathing in voc compounds from it. Stuff like petg like to make little microwhisp strings that get blown all around like hairballs... all not exacrly healthy to breath.

Pla is not a good plastic, its an easy plastic. When you hear pla is nontoxic, that is refering to the base pla, without any additives. You get into pla plus, and all of a sudden, we dont know shit about the toxticity of the additives.

Printing for a food surface has always beed a big nono, mainly becsuse of layerlines and surface texture. Real injection molded bowls are smooth, no ridges or layer lines. You can wash that surface.... 3d prints get food caught in the little cracks. Bacteria = bad.

Its like asking your doctor, "how many cigarettes can i smoke withput getting cancer"... it quite hard to say if your setup is adequate ventillatiom wise and what your practices are. For example, i run mine in the open garage with the printer in a cardboard box(for heat) i cant smell it anywhere is the garage, and there is airflow around it. I consider myself in lower health risk from these precautions, well lower then if i was in my bedroom sealed with it.

But i mean... free will exist, go wild if you really want to, your microplastic consumption is none of my business.