It's far from the worst. The big unknowns are the PEG chain lengths (how many -CH2CH2O- links in the chain, more means more solubility, to a point) and how clean the product is. It's a dirt simple synthesis and there aren't a ton of real nasties (toxic at low concentration) that can be generated, so there's not a huge amount of risk in my opinion. Like, eating fried food is probably a higher risk in the long term.