PET is food-safe, but generally only for one-time use, as it's nearly impossible to sterilize a 3D printed object no matter what it's made of.
Alcohol I suppose is another matter, as it is itself a sterilizing agent, it doesn't matter so much if it gets into the layers.
Technically, PLA is food-safe, though there is a good bit of controversy around that. If you do accidentally actually eat it, it will digest (In other words, it's biodegradable). Though it's non-toxic, some folks disagree on it being harmless (one of the breakdown byproducts is possibly an estrogen analogue).