I'll preface with Fear Mongering.
PG can be Toxic. I saw one report where someone was given PG by IV for 18 straight days (it was a delivery for meds) and they had a toxic reaction.
People can also have a toxic reaction to waterif givin to much.
So there is a basiss, but it would be at a level you will likely never reach vapeing
It is believed that felines are more prone to toxicity from PG then other animals.
Do not feed your
juice to your cats, lrtting your cat
vape may not be a good idea either.